单词：aerodynamic equivalent diameter
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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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A: I am looking for a pan. B: No problem. What size would you like? A: A big one would be nice. B: How about this one? It's our biggest16 in diameter. A: Oh, yes. I like that one. But it's too heavy. B: Okay, try this one. It's made of aluminum. A: O
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今天我们要学的词是equivalent。 Equivalent, 意思是相当于，等同于。《华盛顿邮报》报道说，9/11恐怖袭击事件以来， In Washington and the surrounding areas, 33 building complexes for top-secret intelligence work are
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Tree climbing: Part 2 NB: This is not an accurate word-for-word transcript Dan: Hello and welcome to this weeks 6 Minute English. Im Dan Walker Smith and today, for the second part of our tree climbing programme（节目,计划）, Im joined by Kate.
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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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