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ascertain［ˌæsəˈtein］v. 发现，查明，确定
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【记】词根记忆：as（表加强） + cert（确定的） + ain→搞清楚→查明
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【例】Police had ascertained that true killer who committed the murder.
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【用】ascertain后面可以接that，whether，how等引导的从句。
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ramble［ˈræmbl］vi. 漫步，漫游；（植物）蔓生，丛生 n. 漫步
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【例】①My parents like rambling around in the country.
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②ramble on 喋喋不休地说 Mother rambled on, but Anastasia was not listening at all.
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【派】rambler（n. 漫步者；蔓生植物）
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mesmerize［ˈmezməraiz］vt. 对…催眠；使…着迷
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【例】Cooper looked up, totally mesmerized by the sight of that sexy lady.
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qualm［kwɑːlm］n. 疑惧，紧张不安，疑虑
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【例】With a frightful qualm, I turned, and I saw that I had grasped the antenna of another monster crab that stood just behind me.
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devastate［ˈdevəsteit］vt. 摧毁，破坏，毁灭
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【记】词根记忆：de（表加强） + vas（变空） + t + ate→使完全变空→破坏
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【例】A long war devastated the city and the citizens lived in agony.
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upfront［ˈʌpfrʌnt］adj. 直率的，直截了当的
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【记】联想记忆：up + front（前面的）→直面前方→直率的
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【例】Renovating old houses can be very lucrative, although a lot of capital is needed upfront.
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downright［ˈdaunrait］adj. 清楚的，明确的；直率的，老实的；十足的，彻头彻尾的 adv. 彻底地；完全地；真正地；相当；明确地
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【例】①We know that certain kinds of English invite irritation or downright condemnation. （2000）
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②Many are downright unhappy with it.
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brain［brein］n. 脑子；脑力，智能
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【例】①Cognitive scientists are now trying to decode the human imagination, to understand how the brain visualizes, dreams and creates. （2005）
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②eat / cudgel / rack one’s brain 绞尽脑汁 Mr. White racked his brain trying to remember where he left the cell-phone.
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③have sth. on the brain 一心想 The coach of this football team has winning on the brain.
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