pushbutton

例句：

1. 1. The computer has a pushbutton on the side for easy access.
   这台电脑侧面有一个按钮便于使用。
2. 2. She pushed the button to turn off the lights.
   她按了那个按钮来关灯。
3. 3. He pressed the pushbutton to start the car.
   他按下按钮启动了汽车。