"lever"的定义和意义

Lever

杠杆

a long rigid bar that is put under a heavy object in order to move it

杠杆

a handle on a piece of equipment or machine that is used to make it operate

杠杆, 锁杠杆

a flat metal tumbler in a lever lock

to lever

抬起, 使用杠杆

to lift or move something using a rigid bar or tool as a pivot point

lever

leverage

例子

The mechanic employed a lever to change the flat tire.

He used a lever to lift the heavy rock from the ground.

She used a wooden lever to move the heavy crate across the floor.

With the help of a lever, they managed to pry open the stuck door.

A lever makes it easier to lift heavy objects with less effort.

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