释义
n. 滑车,滑轮
例句
1. The pulley of the clothes line jumped the track and Mother's washing fell down.
晾衣服绳子的滑轮脱绳了，妈妈洗的衣服掉了下来。
2. A rope passed through an overhead pulley, as at the top of a mast, that is used for hoisting.
吊绳用于提升事物的穿过高架滑轮的绳索，如在杆的顶端