... first law of thermodynamics热力学第一定律 first tap锥形手用丝锥 fischer tropsch process费 托法 ...
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To find it, first tap on the blue question-mark icon.
为了找到它,先点击蓝色的问号图标。
首先打开水龙头。
Especially when you get home from school or work, or return from any other public places, the first thing you should do is to turn on the tap, pick up the soap and wash your hands completely.
尤其是当你从学校或下班回家,或从任何其它公共场所返回,首先要做的事情便是打开水龙头,拾起肥皂,彻底地洗干净手。
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