- 双语例句
1、
During the course upstroke, the membrane potential attains zero, and an electrical gradient no longer exists.
在升支发展过程中, 膜电位一达到零, 电位梯度即不再存在.
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2、
Be sure to ventilate on the upstroke.
要明确吹气是在手抬起时吹入的.
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