lever

/ˈlɛvər/

a rigid bar pivoted about a fulcrum

中文释义：杠杆；控制杆

Using a long lever, the worker was able to lift the heavy stone with ease.

使用一根长杠杆，工人能够轻松抬起沉重的石头。

He pulled the lever to start the old-fashioned printing press.

他拉动控制杆启动了老式印刷机。