最新 pulley n.滑轮; 滑轮组; 滑车 复数：pulleys 牛津词典 noun 滑轮；滑轮组；滑车a wheel or set of wheels over which a rope or chain is pulled in order to lift or lower heavy objectsa system of ropes and pulleys绳索滑轮系统 柯林斯词典 N-COUNT 滑轮... 2025-11-26 2
