silencer

名词 silencer:

1. short tube attached to the muzzle of a gun that deadens the sound of firing
2. a tubular acoustic device inserted in the exhaust system that is designed to reduce noise
   同义词：muffler

1. "Right as a trivet now, " said the mechanic as he crawled out from under the car."I've replaced your silencer.
   "修好了，"那修理工从车底下爬出来说道，"我已经更换了你的消声器。"
2. `Silence!' shouted the teacher.
   ｀安静!＇教师喊道。