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BNC: 20246 COCA: 15800

a piece of equipment for moving heavy objects up or down, consisting of a small wheel over which a rope or chain attached to the object can be easily raised or lowered(用于搬运重物的)滑车,滑轮

The blocks of stone had to be lifted into position with a system of pulleys.这些石块得用滑轮组牵引到位。

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