cog wheel [计] 齿轮
- From this technique and the relation to an old cog wheel, the test was called a cogging test.
人们根据这一方法以及它与旧齿轮的关系把该试验称为“齿轮周节试验”。 - One cog-wheel engages with another.
一齿轮与另一齿轮啮合。 - Although John thinks he has an important job, he is really only a cog in the wheel.
尽管约翰认为他身负重任,但他实在只是一名小卒。
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