/mjuːt/

a button on an electronic device that makes it silent

n.静音按钮

I pressed the mute on my phone so she couldn't hear the people talking in the background.

我按下手机上的静音按钮，这样她就不会听到背景中别人的说话声了。

He was watching TV with the mute button on.

他正在按了静音键看电视。