消音器, 排气管
(North American) the part of the exhaust system of a motor vehicle, serving to deaden the sound of the engine
:
• The car's loud roar indicated a problem with its muffler.
汽车的巨大轰鸣声表明其消音器有问题。
• He had to replace the rusted muffler on his old truck.
他不得不更换旧卡车上生锈的消音器。