... 作样品用的假货 dummy 作深呼吸 taken a deep breath 作物形态学特性 plant morphologic characteristic ...
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A deep breath should be taken before each cough. The cough must be deep and prolonged, as when producing sputum from deep inside the chest.
每次咳嗽前应该大口地吸气。咳嗽时必须大力而且要持续地咳嗽，就好像使劲全力要把胸腔里的积痰咳出来一样。
A deep breath should be taken before each cough, and the cough must be deep and prolonged, as when producing sputum from deep inside the chest.
每次咳嗽前必须深深呼吸，并且每一次的咳嗽一定要深和长，就仿如要从胸膛深处咳出痰的情况一样。
A deep breath should be taken before each cough, and the cough must be deep and prolonged, as when producing sputum from deep inside the chest.
每次咳嗽前做一次深呼吸，咳嗽一定要深而且长，就象从胸中咳出痰那样咳嗽。
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