noise reducer的用法和樣例：
例句
- A silencer quietens the noise of the engine.
消聲器把發(fā)動(dòng)機的噪音消弭了。 - I plant professional sound system automobile production products, including various types of noise on tailpipe and related products.
我廠(chǎng)專(zhuān)業(yè)生產(chǎn)汽車(chē)消聲系統產(chǎn)品，包括各類(lèi)消聲器尾管及相關(guān)產(chǎn)品。
