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lag
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音标：英 [læg] 美 [læɡ]
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解释：
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n. 落后；迟延；防护套；囚犯；桶板
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vt. 落后于；押往监狱；加上外套
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vi. 滞后；缓缓而行；蹒跚
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adj. 最后的
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n. (Lag)人名；(俄)拉格
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助记提示：
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1. lag behind sb. 落后于某人。
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2. 谐音“落(这是个多音字，这里最好念：la)哥”----落后的人。
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3. or from some dialectal version of last, lack, or delay.
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中文词源：
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lag 缓慢，滞后词源不详，可能来自lug,用力拖拉。引申词义缓慢，滞后。
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英文词源：
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lag
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lag: English has three distinct words lag. The verb ‘fall behind’ [16] is perhaps of Scandinavian origin (Norwegian has lagga ‘go slowly’), although a link has been suggested with the lag of fog, seg, lag, a dialect expression used in children’s games which represents an alteration of first, second, last. Lag ‘insulate’ [19] comes from an earlier noun lag ‘barrel stave’, which was also probably borrowed from a Scandinavian language (Swedish has lagg ‘stave’); the original material used for ‘lagging’ was wooden laths.
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And finally the noun lag ‘prisoner’ [19] seems to have come from an earlier verb lag, which originally meant ‘steal’, and then ‘catch, imprison’; but no one knows where this came from.
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lag (v.)
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"fail to keep pace," 1520s, earlier as a noun meaning "last person" (1510s), later also as an adjective (1550s, as in lag-mon "last man"), all of uncertain relationship, possibly from a Scandinavian source (compare Norwegian lagga "go slowly"), or some dialectal version of last, lack, or delay. Related: Lag; lagging. The noun meaning "retardation" is from 1855. First record of lag time is from 1951.
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双语例句：
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1. There's a time lag between infection with HIV and developing AIDS.
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从感染艾滋病病毒到病发有一段滞后期。
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来自柯林斯例句
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2. As conceit makes one lag behind, so modesty helps one make progress.
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骄傲使人落后, 谦虚使人进步.
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来自《简明英汉词典》
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3. Ten minutes later, some of runners in the race began to lag.
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十分钟后, 有些参赛的人开始落后了.
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来自《简明英汉词典》
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4. I staved off jet lag with a bath and an early night.
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我洗了个澡又提前睡下,免除飞行时差的反应.
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来自《简明英汉词典》
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5. There is a time lag of about fifteen years.
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时间上有一段约15年的间隔.
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来自《简明英汉词典》
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更多相关例句：
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The little boy lagged behind his parents.
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那小男孩落在了父母的后面。【牛津词典】
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We still lag far behind many of our competitors in using modern technology.
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我们在运用现代技术方面仍然远远落后于我们的许多竞争对手。【牛津词典】
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Britain still lags behind most of Europe in its provisions for women who want time off to have babies...
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英国在妇女生育福利方面依然落后于欧洲大多数国家。【柯林斯高阶英语词典】
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The restructuring of the pattern of consumption in Britain also lagged behind...
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在消费结构重组方面，英国也落后于人。【柯林斯高阶英语词典】
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There's a time lag between infection with HIV and developing AIDS...
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从感染艾滋病病毒到病发有一段滞后期。【柯林斯高阶英语词典】
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Price rises have matched rises in the money supply with a lag of two or three months.
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在增加货币供应两三个月后，物价也跟着上涨。【柯林斯高阶英语词典】
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If you have to take the floorboards up, take the opportunity to lag any pipes at the same time...
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如果一定要把地板掀开，不妨趁此机会给各个管道加一层隔热保护。【柯林斯高阶英语词典】
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Water tanks should be well lagged and the roof well insulated.
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水箱和屋顶都需要敷设严密的保温层。【柯林斯高阶英语词典】
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Why does she always lag behind others when we're out for a walk?
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为什么外出散步时,她总落在后面?【《简明英汉词典》】
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Alas , I fear the artillery must lag behind, but not I trust for long.
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唉! 我担心炮兵一定要落后, 但是我相信他们不会落后得太久.【辞典例句】
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The lag of appraisal methods has terribly delayed the development of venture capital in China.
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评估手段上的落后,极大地阻碍了我国风险投资事业的发展.【期刊摘选】
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That's a jet lag , I think.
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有点时差影响.【期刊摘选】
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Were your kids wowed by new wonders or cranky with jet lag?
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你的孩子是为新鲜事物啧啧称奇,还是因时差而烦躁不已?【期刊摘选】
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In numerous sound, respect of bad news material also unwillings to lag behind.
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在众多声音中, 耗材方面也不甘落后.【期刊摘选】
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Yixianrong refute this, the government's regulatory role lag period.
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对此易宪容反驳, 政府的调控作用有滞后期.【期刊摘选】
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So the controller is consist of lead and lag component, gain component and so on.
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因此控制器由超前滞后 、 增益等环节串连组成.【期刊摘选】
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Be modest and prudent, never lag behind!
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谦虚谨慎, 永不落后!【《现代汉英综合大词典》】
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As conceit makes one lag behind, so modesty helps one make progress.
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骄傲使人落后, 谦虚使人进步.【《简明英汉词典》】
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That is why we must no longer lag behind.
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所以我们绝不容许再落后下去.【演讲部分】
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Laws and regulations concerning the management of passport are incomplete and lag behind.
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在护照管理法律、法规方面也比较滞后,法律、法规不完备.【期刊摘选】
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Note: There may be a bit a lag as videos are downloaded.
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注意: 有可能是一个有点滞后,作为影片下载.【期刊摘选】
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Ten minutes later, some of runners in the race began to lag.
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十分钟后, 有些参赛的人开始落后了.【《简明英汉词典》】
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Be modest, otherwise you will lag behind.
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要谦虚, 否则就要落后.【《现代汉英综合大词典》】
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Modesty helps one to go forward [ make progress ]; conceit makes one lag behind.
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虚心 使人进步, 骄傲使人落后.【《现代汉英综合大词典》】
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Britain's economic development must lag behind that of almost every other industrial nation.
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英国的经济发展肯定落后于几乎所有的其他工业国.【《简明英汉词典》】
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I staved off jet lag with a bath and an early night.
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我洗了个澡又提前睡下,免除飞行时差的反应.【《简明英汉词典》】
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This work must go forward without lag.
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这项工作必须毫不迟延地进行.【《简明英汉词典》】
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If your payments of rent lag behind, you will be asked to leave.
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如果你不如期交房租, 你就会被赶走.【《简明英汉词典》】
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There is a time lag of about fifteen years.
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时间上有一段约15年的间隔.【《简明英汉词典》】
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In the developed world, women lag behind men in pay and political power.【出自-2013年12月阅读原文】
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The graduation rates for blacks, Latinos, and Native Americans lag far behind the graduation rates for whites and Asians.【出自-2011年6月阅读原文】
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America is lagging behind in the STEM disciplines.【出自-2010年12月阅读原文】
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As a consequence, they lag behind other disciplines.【2019年6月六级真题（第二套）听力 Section C】
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Code breaking never lags (落后) far behind code making.【2016年高考英语全国卷1 阅读理解 七选五 原文】
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Obviously you are suffering from jet lag.【2015年高考英语重庆卷 完形填空 B 原文】
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For years,studies have found that first-generation college students—those who do not have a parent with a college degree—lag other students on a range of education achievement factors.【2015年考研真题（英语二）阅读理解 Section Ⅱ】
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