蝾螈(钝口螈),也被称为“水怪”和“行走的墨西哥鱼”,是一种长约一英尺的独特水生生物。利用粗短的腿,它既能在湖底爬行,也可以湖面游动。
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Airplanes drag along a very thin shield of motionless air known as a boundary layer.
飞机拽着一层很薄的紧贴机面不动的空气一道向前运动,这层空气叫做附面层.
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The well-to-do are the passengers and the poor are the " teams " which drag the coach along.
富人是乘客,穷人是拉车的夫役.
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它有点像动力风筝,但这个只需要你在极短的时间内跳入空中,借助风力前行。
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