mute key

例句：

1. 1. The mute key on the remote control is used to turn off the TV.
   遥控器上的静音键用于关闭电视。
2. 2.The silent key in the door handle allows you to open it without making a sound.
   门把手上的静音键允许你无声打开它。
3. 3.The muffled sound of the raindrops hitting the window was almost impossible to hear over the hum of the air conditioner.
   雨滴打在窗户上的声音被空调的嗡嗡声几乎淹没了。