A pulley is a device consisting of a wheel over which a rope or chain is pulled in order to lift heavy objects.
例句
The weights are moved via a cable and pulley system.重物通過纜繩和滑輪系統運送。
英漢詞典釋義
n.
滑輪(組);滑車
The stone was lifted by means of a rope and pulley.這塊大石是用繩子和滑輪給吊起來的。
英英詞典釋義
Noun
1. a simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope