名词
中文翻译：曲柄
同义词：
['crank', 'crankshaft']
例句：
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1.The car's engine is running smoothly because the crankshaft is aligned correctly.
汽车的引擎运行顺畅，因为曲轴正确对齐。
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2.The old clock had a crankshaft that was worn out and needed to be replaced.
旧时钟有一个磨损的曲轴需要更换。
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3.The mechanic checked the crankshaft of the car before starting it.
机械师在启动汽车之前检查了曲轴。