单词：aerodynamic roughness
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arc弧线 arch拱 astronomy天文学 aerodynamic空气动力学的 axis轴 comet彗星 dense稠密 eject驱逐 doctrine学说 gravel砂砾 hemisphere半球 galaxy银河，星系 gauge估计 meteorology气象学 magnitude大小 perpendicular垂直的
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Screams Have Special Place in Brain 尖叫声在大脑中会有特殊的位置 From VOA Learning English, this is the Health Lifestyle report. Have you ever thought about screaming? A blood-curdling scream is a natural reaction to sudden, extreme fri
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The sun has gone completely blank for the second time this month suggesting that Earth could be heading for a mini ICE AGE. 本月已经第二次出现太阳黑子完全消失，这预示着地球可能迎来迷你冰期。 Earlier this month, there
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What Makes Hybrid Cars So Efficient ? 最快的车是什么？ Don : Hybrid cars are known as hybrid s because they use an electric motor to augment the performance of a small, efficient gasoline engine. But this isnt the only reason hybrid s are mor
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GRE改革之后，新GRE词汇量减少20%，但在减少的同时，新GRE对词汇的考察也加大了一定的难度。新GRE词汇是整个考试的基础部分，具有重要地位。以下是2012新GRE词汇：asperity，希望能帮助各位考
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