扬声器 loudspeaker ; [电子] Speaker ; haut-parleur ; SPK
消声器 [声] muffler ; acoustic filter ; deafener
接触式传声器 contact microphone
重低音扬声器 Subwoofer
滤声器 [声] acoustic filter ; acoustical filter ; sound filter ; noise filter
高音扬声器 Tweeter ; treble frequency loudspeaker ; treble loudspeaker ; RIBBON TWEETER
低音扬声器 [电子] WOOFER ; woofer speaker ; basetone loudspeaker ; bass loudspeaker
电容传声器 [电子] condenser microphone ; [电子] capacitor microphone ; condenser microphone capacitor mic ; capacitance microphone
发声器 [声] acoustic generator ; [声] sounder ; Sound device ; Siren
减声器 antisqueak ; sound deadener ; diminisher ; muffler
备受争议的“呜呜祖拉”加油工具已成为南非世界杯的一大标志，日前，一家网络公司推出了一种据称可消除这种塑料喇叭所发出的噪音的“呜呜祖拉滤声器”。
An online company has begun marketing an "Anti Vuvuzela Filter" that promises to silence the sound of the controversial plastic trumpets that have become the trademark of South Africa's World Cup.
挡风玻璃上的刮雨器来回刮着，发出咔嚓声。
我们调转船头的时候，信号器又开始发出不停的嘟嘟声。
When we turned the boat about, the signal began to bleep again constantly.
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