| 英语单词 | pulley |
|---|---|
| 英美音标 | 英 ['pʊli] 美 ['pʊli] |
| 中文释义 | n.滑车;滑轮;皮带轮 |
| 英语例句 | (1) There is no bucket and pulley to this well. (2) This allowed the oil in the nose drive to leak out around the pulley. (3) The lifting device is a system of rope and pulley. (4) Pulley bearings are frictionless. (5) The belt started wrapping up on the tractor pulley. (6) Attach the pulley which is held by hand with screws. |
| 中文例句 | (1) 那口井没有吊桶和滑车。 (2) 这允许油在要在滑车周遭渗漏的鼻子运动里。 (3) 这种起重装置是由缆索和滑轮组成的。 (4) 滑轮轴承是无摩擦的。 (5) 皮带开始绕在拖拉机的皮带轮上。 (6) 用螺丝安装皮带轮的手持部分。 |
| vocabulary简明 | A pulley is a basic device or machine made of a wheel with a rim that a cord or rope fits around. The wheel and axle of a pulley make it easier to lift heavy objects with the rope. |
| vocabulary扩展 | Ships and sailboats use pulleys — though they're often called drums — to make raising the sails less difficult. Flagpoles also have pulleys for raising and lowering the flag, many garage doors work by a pulley system, and loading docks and constructions sites use pulleys for lifting heavy things. Pulley comes from the Old French polie, with a Greek root of polidion, or "little pivot." |
| 柯林斯解释 | 1 [N-COUNT 可数名词]滑轮;皮带轮 A pulley is a device consisting of a wheel over which a rope or chain is pulled in order to lift heavy objects.
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