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例句 1. The scientists aimed to develop more pest-resistant crops which are genetically designed to be unattractive to pests. 这些科学家的目标是研制一种更加抗虫的庄稼作物，这种作物从基因上就具备不吸引害虫的特点。
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2. Scientists found there are a number of damaging insects that are resistant to pesticide. 科学家们发现有许多害虫对杀虫剂具有抗药性。
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resonance［‘rezənəns］n. 共振；共鸣；回声
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例句 1. In a live performance, you will find yourself among a group of people who are indulged in the same interest and you can share your thoughts with them, but this kind of resonance is seldom sensed in our daily life so it is a sufficient reason for you to attend a concert or a game. 在一场现场表演中，你会发现自己身处为同一件事情陶醉的人群之中，而且你可以与他们分享你的想法，但我们在日常生活中却很少能够感受到这样的共鸣，因此这就是现场观看演唱会或体育比赛的一个足够充分的理由。
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2. The musical tone of an electric guitar is created by electronical amplification, instead of by the resonance of the body of the guitar. 电吉他的乐音是靠电子扩音器产生，而不是靠吉他本身的共振产生的。
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retrieve［ri’tri
:v］v. 重新找回（得到），取回；检索
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例句 1. Information can be stored into the information highway and be retrieved only in programming languages. 只有以汇编语言的形式才能将信息存储在信息高速公路之中并被重新找回。
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2. However, if you forget to retrieve your card after operating on the ATM, others may withdraw all your money in your account. 如果你在自动柜员机上操作后忘记取回你的卡，别人就可能会把你账户里的钱都取走。
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同义 regain（v. 重新获得）
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scatter［‘skætər］v. 分散；撒播，散开 n. 散落
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例句 1. If the temperature goes on increasing, the icebergs scattered in both poles of the Earth will start to melt; thus the sea level will rise and the cities and villages along the seashores will be engulfed. 如果温度持续上升，分布在地球两极的冰山就会开始融化，这样海平面就会上升，而沿海的城市和村庄将会被吞没。
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2. He explains that if a place had been used for storing maize, there would be many traces of scattered maize on the floor. 他解释道，如果一个地方曾被用来储放玉米，那么在地板上应该能看到四处散落的玉米粒。
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3. The explosion scattered the crowd in a second. 爆炸声立刻使人群四散逃离。
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同义 disperse（v. 分散）
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要点 如果要表达irregularly distribute的含义，就可以直接用scatter表示“分布”。在写作中选择恰当的动词不但可以更到位地表达，还能使语言更简练。
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shallow［‘ʃælou］a. 浅的；浅薄的 n. 浅滩，浅水处
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例句 1. If such a developed media is absent, we can have only a shallow understanding of what’s happening in the world. 如果没有如此发达的媒体，或许我们对世界上正在发生的事情只能有一个浅显的理解。
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2. Whales that are large in size will get in trouble if they access shallow or rocky locations. 体积较大的鲸鱼如果靠近浅滩或者礁石较多的地方将会使自己陷入麻烦。
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3. The perfectly preserved fossil fish had been living in a vast shallow lake. 这些保存完好的化石鱼曾经生活在一片广阔的浅水湖中。
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同义 superficial（a. 浅薄的）
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要点 shallow除了可以表示深浅程度以外，也可以用来表示“肤浅的，浅显的”等含义，superficial的含义与此类似，比如：He is a superficial man without any intellect.
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sharp［ʃɑ
:rp］a. 锋利的；敏锐的；急剧的 ad.（时刻）正，准
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例句 1. Sharp knives should be kept away from children for safety reasons. 安全起见，锋利的刀具应放置在儿童无法触及的地方。
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2. There has been a sharp decline in traditional book reading, because more people tend to read ebooks on tablets or smartphones. 传统纸质书阅读人数出现了急剧的下降，因为更多的人选择在平板电脑或智能手机上阅读电子书。
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3. In fact, with the sharp development of technology, more jobs on the labor market today are for people who are well-educated. 随着技术的急剧发展，如今劳动力市场上大多数的工作都针对受过良好教育的人。
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