1. The workers used pulleys to lift heavy boxes.
工人们使用滑轮来提升重箱子。

2. Pulleys make it easier to move heavy objects.
滑轮让搬运重物变得更容易。

3. The gym equipment uses pulleys to adjust resistance.
健身器材使用滑轮来调节阻力。

4. Students learned how pulleys reduce the effort needed to lift weights.
学生们学习了滑轮如何减少提起重物所需的力。

A: Do you know how pulleys work?
A：你知道滑轮是如何工作的吗？

B: Yes, they help reduce the force needed to lift objects.
B：知道，它们可以减少提起物体所需的力。

1) 用于改变力方向的简单机械装置

2) 常见于工程、建筑和起重设备

3) 可组成滑轮组以减少用力

4) 在健身器材中用于调节阻力

1. 滑轮（的复数形式）；一种简单机械装置

e.g.The system of pulleys lifted the heavy load.
滑轮系统吊起了重物。

noun

1. The plural form of pulley; simple machines consisting of a wheel over which a rope or chain runs, used to lift or move loads.

Synonym: pulley systems, lifting wheels