pulley
US /ˈpʊl.i/
UK /ˈpʊl.i/
名词
1.
滑轮
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:
示例:
•
The blocks of stone had to be lifted into position with a system of pulleys.
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