• 重庆沃尔得全英文学习环境,4人小班全外教授课;
  • 沃尔得中外教双语学习顾问,灵活的上课时间;
  • 沃尔得具有非常优秀的外籍教师团队。

400-689-2779

青少儿英语词汇突破指南:三大科学记忆法助力高效积累

来源:重庆沃尔得国际英语 时间:05-19

青少儿英语词汇突破指南:三大科学记忆法助力高效积累

青少儿英语学习的核心挑战:词汇积累难题

在青少儿英语学习过程中,词汇积累往往被视作最基础却最棘手的环节。许多孩子提到背单词就皱眉头——反复抄写记不住、听写错误被批评、日常使用想不起,这些场景在英语课堂上并不鲜见。但必须明确的是:词汇量是语言能力的基石,无论是阅读理解、口语表达还是写作输出,都需要足够的词汇储备作为支撑。当"背单词=痛苦"的认知形成时,如何帮助孩子找到既有效又有趣的记忆方法,就成了提升英语学习效率的关键突破口。

印象联想法:让单词与感官记忆"绑定"

人类对首次接触的事物往往记忆更深刻,英语单词的记忆同样可以借助这种"首因效应"。当孩子初次遇到新单词时,若能将其发音、拼写与具体的感官体验建立联系,记忆效果会显著提升。

以常见单词"sunshine"(阳光)为例:发音时"sun"是"太阳","shine"有"闪耀"之意,组合起来就是"太阳闪耀的光"。可以引导孩子回忆晴天外出玩耍时,阳光洒在身上的温暖触感;或者观察绘本中阳光洒在花朵上的明亮画面。这种将抽象词汇与具体视觉、触觉记忆关联的方式,比单纯重复拼写更能加深印象。

再比如"elephant"(大象),发音中的"ph"组合会产生类似大象鼻子呼气的声音。可以让孩子模仿大象甩鼻子的动作,同时拼读单词,将"长鼻子"的形象、"ph"的发音与单词含义三者结合。这种多感官参与的记忆过程,能有效降低遗忘率。

相似词群辨析法:在对比中强化记忆

英语中有大量拼写或发音相似的词汇,这些"易混词"常让孩子感到困惑。但换个角度看,正是这种相似性为记忆提供了线索——通过系统梳理词群,在对比中辨析差异,反而能更高效地掌握多个单词。

以"ship"(船)和"sheep"(绵羊)为例:两者仅中间一个字母之差(i vs e),但含义截然不同。可以引导孩子观察:"ship"有"i",像船的桅杆直立;"sheep"有"ee",像绵羊的两只眼睛圆溜溜。通过形象化的区分,不仅能记住两个单词,还能掌握"i"和"ee"在发音上的差异(短音/i/ vs 长音/iː/)。

更系统的方法是学习基础词根词缀。比如"able"作为后缀表示"可...的",掌握这个规律后,孩子可以轻松扩展出"comfortable"(可舒适的→舒适的)、"lovable"(可爱的)、"readable"(可读的)等词汇。这种"举一反三"的记忆方式,能让词汇量呈指数级增长。

需要注意的是,词群整理要遵循"由浅入深"的原则。低年级孩子可以从简单的拼写对比开始(如"cat-cat"→"cap"),高年级则可以逐步引入词根词缀知识,避免因难度过高产生挫败感。

智能工具辅助法:让科技为记忆赋能

在移动互联网时代,各类英语学习APP为单词记忆提供了新的可能性。这些工具通过游戏化设计、个性化推送和科学记忆曲线,有效解决了传统背词方式"枯燥、低效"的问题。

以某知名背词APP为例:它采用"图像+例句+发音"的多维呈现方式,每个单词不仅标注释义,还配有生动的图片和情景例句。比如学习"delicious"(美味的)时,会展示蛋糕、披萨等美食图片,搭配"I love delicious food"的例句,让孩子在具体语境中理解词汇。

另一个值得关注的功能是"智能复习"。基于艾宾浩斯遗忘曲线,APP会自动计算每个单词的复习时间,避免孩子重复记忆已掌握的内容。这种"精准推送"的方式,能将记忆效率提升30%以上。

需要提醒的是,工具只是辅助手段,使用时要注意控制时间。建议每天用15-20分钟通过APP学习新单词,再结合纸质练习本进行拼写巩固,形成"线上输入+线下输出"的完整学习闭环。

找到适合自己的方法:坚持比技巧更重要

无论是印象联想法、相似词群辨析法还是智能工具辅助法,本质上都是帮助孩子降低记忆难度的"脚手架"。最终能否真正掌握词汇,关键在于是否能坚持实践。

建议家长和老师引导孩子建立"每日词汇档案":准备一个精美的单词本,每天记录3-5个新学单词,用彩笔标注记忆方法(如"联想法:sunshine=太阳+闪耀的光"),并配上简单的插图。每周回顾一次,将已掌握的单词转移到"已达标"区域。这种可视化的积累过程,既能增强成就感,又能培养良好的学习习惯。

最后想强调的是:词汇积累没有"一蹴而就"的捷径,但通过科学的方法和持续的努力,每个孩子都能突破"背词难"的困境。当单词不再是学习路上的障碍,英语学习的乐趣自然会慢慢浮现——从能读懂喜欢的英文绘本,到能用简单句子和外国小朋友交流,这些小进步都会成为孩子继续前行的动力。

校区导航
基本 文件 流程 错误 SQL 调试
  1. 请求信息 : 2026-04-03 23:49:30 HTTP/1.1 GET : http://www.aabqy.com/s/1428/n/9964.html
  2. 运行时间 : 0.016171s [ 吞吐率:61.84req/s ] 内存消耗:387.85kb 文件加载:137
  3. 缓存信息 : 0 reads,0 writes
  1. /data/web/baijiao_branch_collect/public/index.php ( 0.79 KB )
  2. /data/web/baijiao_branch_collect/vendor/autoload.php ( 0.75 KB )
  3. /data/web/baijiao_branch_collect/vendor/composer/autoload_real.php ( 1.63 KB )
  4. /data/web/baijiao_branch_collect/vendor/composer/platform_check.php ( 0.90 KB )
  5. /data/web/baijiao_branch_collect/vendor/composer/ClassLoader.php ( 15.99 KB )
  6. /data/web/baijiao_branch_collect/vendor/composer/autoload_static.php ( 4.26 KB )
  7. /data/web/baijiao_branch_collect/vendor/topthink/think-helper/src/helper.php ( 8.34 KB )
  8. /data/web/baijiao_branch_collect/vendor/topthink/think-validate/src/helper.php ( 2.19 KB )
  9. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/helper.php ( 1.47 KB )
  10. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/stubs/load_stubs.php ( 0.16 KB )
  11. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/Exception.php ( 1.69 KB )
  12. /data/web/baijiao_branch_collect/vendor/topthink/think-container/src/Facade.php ( 2.71 KB )
  13. /data/web/baijiao_branch_collect/vendor/symfony/deprecation-contracts/function.php ( 0.99 KB )
  14. /data/web/baijiao_branch_collect/vendor/symfony/polyfill-mbstring/bootstrap.php ( 8.26 KB )
  15. /data/web/baijiao_branch_collect/vendor/symfony/polyfill-mbstring/bootstrap80.php ( 9.78 KB )
  16. /data/web/baijiao_branch_collect/vendor/symfony/var-dumper/Resources/functions/dump.php ( 1.49 KB )
  17. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/App.php ( 15.30 KB )
  18. /data/web/baijiao_branch_collect/vendor/topthink/think-container/src/Container.php ( 15.76 KB )
  19. /data/web/baijiao_branch_collect/vendor/psr/container/src/ContainerInterface.php ( 1.02 KB )
  20. /data/web/baijiao_branch_collect/app/provider.php ( 0.19 KB )
  21. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/Http.php ( 6.04 KB )
  22. /data/web/baijiao_branch_collect/vendor/topthink/think-helper/src/helper/Str.php ( 7.29 KB )
  23. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/Env.php ( 4.68 KB )
  24. /data/web/baijiao_branch_collect/app/common.php ( 10.83 KB )
  25. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/helper.php ( 18.78 KB )
  26. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/Config.php ( 5.54 KB )
  27. /data/web/baijiao_branch_collect/config/app.php ( 1.29 KB )
  28. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/facade/Env.php ( 1.67 KB )
  29. /data/web/baijiao_branch_collect/config/cache.php ( 1.22 KB )
  30. /data/web/baijiao_branch_collect/config/config.php ( 0.26 KB )
  31. /data/web/baijiao_branch_collect/config/console.php ( 0.29 KB )
  32. /data/web/baijiao_branch_collect/config/cookie.php ( 0.56 KB )
  33. /data/web/baijiao_branch_collect/config/database.php ( 2.29 KB )
  34. /data/web/baijiao_branch_collect/config/filesystem.php ( 0.63 KB )
  35. /data/web/baijiao_branch_collect/config/lang.php ( 0.81 KB )
  36. /data/web/baijiao_branch_collect/config/log.php ( 1.37 KB )
  37. /data/web/baijiao_branch_collect/config/middleware.php ( 0.19 KB )
  38. /data/web/baijiao_branch_collect/config/route.php ( 1.54 KB )
  39. /data/web/baijiao_branch_collect/config/session.php ( 0.57 KB )
  40. /data/web/baijiao_branch_collect/config/trace.php ( 0.34 KB )
  41. /data/web/baijiao_branch_collect/config/view.php ( 0.81 KB )
  42. /data/web/baijiao_branch_collect/app/event.php ( 0.25 KB )
  43. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/Event.php ( 7.67 KB )
  44. /data/web/baijiao_branch_collect/app/service.php ( 0.13 KB )
  45. /data/web/baijiao_branch_collect/app/AppService.php ( 0.26 KB )
  46. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/Service.php ( 1.64 KB )
  47. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/Lang.php ( 7.35 KB )
  48. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/lang/zh-cn.php ( 13.70 KB )
  49. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/initializer/Error.php ( 3.31 KB )
  50. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/initializer/RegisterService.php ( 1.33 KB )
  51. /data/web/baijiao_branch_collect/vendor/services.php ( 0.14 KB )
  52. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/service/PaginatorService.php ( 1.52 KB )
  53. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/service/ValidateService.php ( 0.99 KB )
  54. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/service/ModelService.php ( 2.04 KB )
  55. /data/web/baijiao_branch_collect/vendor/topthink/think-trace/src/Service.php ( 0.77 KB )
  56. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/Middleware.php ( 6.72 KB )
  57. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/initializer/BootService.php ( 0.77 KB )
  58. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/Paginator.php ( 11.86 KB )
  59. /data/web/baijiao_branch_collect/vendor/topthink/think-validate/src/Validate.php ( 63.20 KB )
  60. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/Model.php ( 23.55 KB )
  61. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/model/concern/Attribute.php ( 21.05 KB )
  62. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/model/concern/AutoWriteData.php ( 4.20 KB )
  63. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/model/concern/Conversion.php ( 6.75 KB )
  64. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/model/concern/DbConnect.php ( 5.16 KB )
  65. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/model/concern/ModelEvent.php ( 2.33 KB )
  66. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/model/concern/RelationShip.php ( 28.30 KB )
  67. /data/web/baijiao_branch_collect/vendor/topthink/think-helper/src/contract/Arrayable.php ( 0.09 KB )
  68. /data/web/baijiao_branch_collect/vendor/topthink/think-helper/src/contract/Jsonable.php ( 0.13 KB )
  69. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/model/contract/Modelable.php ( 0.09 KB )
  70. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/Db.php ( 2.88 KB )
  71. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/DbManager.php ( 8.52 KB )
  72. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/Log.php ( 6.28 KB )
  73. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/Manager.php ( 3.92 KB )
  74. /data/web/baijiao_branch_collect/vendor/psr/log/src/LoggerTrait.php ( 2.69 KB )
  75. /data/web/baijiao_branch_collect/vendor/psr/log/src/LoggerInterface.php ( 2.71 KB )
  76. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/Cache.php ( 4.92 KB )
  77. /data/web/baijiao_branch_collect/vendor/psr/simple-cache/src/CacheInterface.php ( 4.71 KB )
  78. /data/web/baijiao_branch_collect/vendor/topthink/think-helper/src/helper/Arr.php ( 17.45 KB )
  79. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/cache/driver/Redis.php ( 6.94 KB )
  80. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/cache/Driver.php ( 9.03 KB )
  81. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/contract/CacheHandlerInterface.php ( 1.99 KB )
  82. /data/web/baijiao_branch_collect/app/Request.php ( 0.09 KB )
  83. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/Request.php ( 55.78 KB )
  84. /data/web/baijiao_branch_collect/app/middleware.php ( 0.26 KB )
  85. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/Pipeline.php ( 2.61 KB )
  86. /data/web/baijiao_branch_collect/vendor/topthink/think-trace/src/TraceDebug.php ( 3.40 KB )
  87. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/Route.php ( 23.73 KB )
  88. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/route/RuleName.php ( 5.75 KB )
  89. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/route/Domain.php ( 2.53 KB )
  90. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/route/RuleGroup.php ( 22.43 KB )
  91. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/route/Rule.php ( 26.95 KB )
  92. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/route/RuleItem.php ( 9.78 KB )
  93. /data/web/baijiao_branch_collect/route/app.php ( 3.05 KB )
  94. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/facade/Route.php ( 4.70 KB )
  95. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/route/dispatch/Controller.php ( 4.74 KB )
  96. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/route/Dispatch.php ( 10.44 KB )
  97. /data/web/baijiao_branch_collect/app/controller/Index.php ( 33.26 KB )
  98. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/facade/Request.php ( 9.20 KB )
  99. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/route/Url.php ( 14.07 KB )
  100. /data/web/baijiao_branch_collect/app/model/IndexModel.php ( 19.95 KB )
  101. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/facade/Config.php ( 1.37 KB )
  102. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/facade/Cache.php ( 2.06 KB )
  103. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/facade/Db.php ( 0.93 KB )
  104. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/db/connector/Mysql.php ( 5.73 KB )
  105. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/db/PDOConnection.php ( 53.74 KB )
  106. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/db/Connection.php ( 8.39 KB )
  107. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/db/ConnectionInterface.php ( 4.57 KB )
  108. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/db/builder/Mysql.php ( 16.58 KB )
  109. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/db/Builder.php ( 24.07 KB )
  110. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/db/BaseBuilder.php ( 27.50 KB )
  111. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/db/Query.php ( 15.97 KB )
  112. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/db/BaseQuery.php ( 45.13 KB )
  113. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/db/concern/TimeFieldQuery.php ( 7.43 KB )
  114. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/db/concern/AggregateQuery.php ( 3.26 KB )
  115. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/db/concern/ModelRelationQuery.php ( 20.07 KB )
  116. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/db/concern/ParamsBind.php ( 3.66 KB )
  117. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/db/concern/ResultOperation.php ( 7.01 KB )
  118. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/db/concern/WhereQuery.php ( 19.37 KB )
  119. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/db/concern/JoinAndViewQuery.php ( 7.11 KB )
  120. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/db/concern/TableFieldInfo.php ( 2.63 KB )
  121. /data/web/baijiao_branch_collect/vendor/topthink/think-orm/src/db/concern/Transaction.php ( 2.77 KB )
  122. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/log/driver/File.php ( 5.96 KB )
  123. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/contract/LogHandlerInterface.php ( 0.86 KB )
  124. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/log/Channel.php ( 3.89 KB )
  125. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/event/LogRecord.php ( 1.02 KB )
  126. /data/web/baijiao_branch_collect/vendor/topthink/think-helper/src/Collection.php ( 16.47 KB )
  127. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/Response.php ( 8.81 KB )
  128. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/response/View.php ( 3.29 KB )
  129. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/Cookie.php ( 6.06 KB )
  130. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/View.php ( 4.39 KB )
  131. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/view/driver/Php.php ( 6.44 KB )
  132. /data/web/baijiao_branch_collect/vendor/topthink/framework/src/think/contract/TemplateHandlerInterface.php ( 1.60 KB )
  133. /data/web/baijiao_branch_collect/view/index/pc/school_news_details.php ( 2.39 KB )
  134. /data/web/baijiao_branch_collect/view/index/pc/school_top.php ( 5.76 KB )
  135. /data/web/baijiao_branch_collect/view/index/pc/school_right.php ( 2.17 KB )
  136. /data/web/baijiao_branch_collect/view/index/pc/school_bottom.php ( 1.16 KB )
  137. /data/web/baijiao_branch_collect/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
  1. CONNECT:[ UseTime:0.000411s ] mysql:host=127.0.0.1;port=3306;dbname=baijiao_branch_collect;charset=utf8
  2. SHOW FULL COLUMNS FROM `fqi_school` [ RunTime:0.001492s ]
  3. SELECT * FROM `fqi_school` WHERE `school_id` = '1428' AND `site_id` = 23 AND `school_status` = 1 LIMIT 1 [ RunTime:0.000333s ]
  4. SHOW FULL COLUMNS FROM `fqi_school_class` [ RunTime:0.000783s ]
  5. SELECT * FROM `fqi_school_class` WHERE `school_id` = 1428 [ RunTime:0.000270s ]
  6. SHOW FULL COLUMNS FROM `fqi_school_campus` [ RunTime:0.000828s ]
  7. SELECT * FROM `fqi_school_campus` WHERE `school_id` = 1428 [ RunTime:0.000289s ]
  8. SHOW FULL COLUMNS FROM `fqi_school_news` [ RunTime:0.000957s ]
  9. SELECT `a`.*,`content` FROM `fqi_school_news` `a` LEFT JOIN `fqi_school_news_content` `b` ON `b`.`content_id`=`a`.`content_id` WHERE `school_id` = 1428 AND `a`.`content_id` = '9964' AND `news_status` = 1 AND `school_status` = 1 LIMIT 1 [ RunTime:0.000979s ]
  10. (select content_id,news_name,school_id from fqi_school_news where school_id = '1428' and content_id < '9964' and site_id <= '23' order by content_id desc limit 1) union all(select content_id,news_name,school_id from fqi_school_news where school_id = '1428' and content_id > '9964' and site_id <= '23' order by content_id asc limit 1) [ RunTime:0.000998s ]
  11. SHOW FULL COLUMNS FROM `fqi_school_course` [ RunTime:0.000948s ]
  12. SELECT * FROM `fqi_school_course` WHERE `school_id` = 1428 AND `site_id` = 23 AND `course_status` = 1 AND `school_status` = 1 ORDER BY `course_id` DESC LIMIT 4 [ RunTime:0.000495s ]
  13. SELECT * FROM `fqi_school_course` WHERE `school_id` = 1428 AND `school_status` = 1 AND `course_status` = 1 ORDER BY `course_id` DESC LIMIT 8 [ RunTime:0.000244s ]
  14. SELECT * FROM `fqi_school_news` WHERE `school_id` = 1428 ORDER BY `click` DESC,`news_id` DESC LIMIT 5 [ RunTime:0.000193s ]
  15. SELECT `content_id`,`news_name`,`a`.`school_id`,`b`.`school_name` FROM `fqi_school_news` `a` LEFT JOIN `fqi_school` `b` ON `b`.`school_id`=`a`.`school_id` WHERE `a`.`site_id` = '23' AND `b`.`school_status` = '1' AND `news_status` = 1 AND `content_id` < 9964 ORDER BY `content_id` DESC LIMIT 20 [ RunTime:0.003460s ]
0.016471s