mute control

例句：

1. 1. The patient was given a mute control to prevent him from speaking out of turn.
   患者被给予了沉默控制，以防止他说话不经允许。
2. 2.The scientist used a mute control to record the experiment without disturbing the subjects.
   科学家使用沉默控制来记录实验，而不打扰实验对象。
3. 3. During the trial, the defendant had a mute control on all questions except for one.
   在审判期间，被告对除一个问题外的所有问题都保持沉默。