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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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派生 sharply（ad. 急剧地）
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要点 sharp除了可以描述物体是“尖锐的，锋利的”外，在写作中更多用来表示数目或情况的剧烈变化。
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silicon［‘silikən］n. 硅
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搭配 silicon chip 硅片；silicon resin 硅树脂
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例句 For programmers who work in the Silicon Valley, computer language is their universal language although they come from different parts of the world. 对于在硅谷工作的程序员来说，尽管他们来自五湖四海，但计算机语言是他们之间共同的语言。
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simulate［‘simjuleit］v. 模仿，模拟；伪装；扮演
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例句 1. With the help of computer programs, many scientific experiments can be simulated in a much cost-effective way. 电脑程序可以以一种相当低成本的方式模拟许多科学实验。
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2. Computers can simulate environments that are needed to improve some theories but cannot be found in real life. 计算机可以模拟那些为完善某些理论所需的环境，而这些环境在现实世界中是不存在的。
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