pulley block

n. 滑轮组

例句与用法：

Our flag is raised to the top of a pole by a rope and two pulley.

我们的旗帜被用一根绳子和两个滑轮升到了竿顶。

A simple device, such as a lever, a pulley, or an inclined plane, that alters the magnitude or direction, or both, of an applied force; a simple machine.

机械装置一个简单装置，如杠杆、滑轮或斜面刨，可以改变作用力的大小或方向或同时改变; 简单机械装置

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

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。

词形变化：

名词复数: pulleys |