名词
中文翻译：中心曲柄
同义词：
['central shaft', 'center pulley', "center wheel例句：1. The car's engine is located at the center of the vehicle.（汽车的发动机位于车辆的中心。）"]
例句：
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1. The car's engine is located at the center of the vehicle.
汽车的发动机位于车辆的中心。
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2. The center of the circle is the point where all lines intersect.
圆的中心是所有线相交的点。
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3.The center crank is responsible for turning the gears.
中心曲柄负责转动齿轮。