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【例】rack one’s brains 绞尽脑汁 In virtue of competition, individuals rack their brains to improve their personality and their ability to solve all kinds of problems to achieve success. （1999）
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sprint［sprint］vi. 用全速奔跑，疾跑
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【例】He has to sprint back, grabs all the keys, and charges back again to the door.
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trespass［ˈtrespəs］vi. 非法侵入他人地界；侵占或无理使用（他人房间等）；犯过失，在宗教或道德方面犯罪 n. 有关非法侵入的法律；并非有意的非法侵入；罪过，过失
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【例】①The one who trespasses on our rights will be punished.
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②Farmers have already barricaded their fields to prevent people from trespassing on their land.
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indistinguishable［ˌindisˈtiŋgwiʃəbl］adj. 不能区别的，（实际上）完全相同的
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【例】A business firm chooses the price that maximizes its net revenues, irrespective of fluctuations in income; and increasingly the outlook of universities in the United States is indistinguishable from those of business firms. （2005）
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trick［trik］n. 诡计，花招；恶作剧；戏法，把戏；窍门，诀窍；癖好 vt. 哄骗，欺骗
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【例】①The trick is to hit these sound waves with other waves in a carefully controlled way. （1999听力）
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②We tricked the friends into thinking that we lost the game.
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【用】trick sb. into doing sth. 是常用搭配，表示“哄骗…做…”。
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allay［əˈlei］vt. 缓和，减轻
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【记】联想记忆：al（看作all，全都） + lay（放置）→负担都放下了→减轻
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【例】The countries make efforts to allay the tension in that region through peace talk.
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unbecoming［ˌʌnbiˈkʌmiŋ］adj. 不适合穿用的，不合适的；不适当的，不得体的
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【记】联想记忆：un + becoming（合适的）→不合适的
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【例】Although not illegal his conduct was unbecoming for a teacher.
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【用】词组(be) unbecoming to / for表示“对…是不相称／适宜的”。
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Trouble is only opportunity in work clothes.
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困难只是穿上工作服的机遇。
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——美国实业家 凯泽（H. J. Kaiser, American businessman）
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