降噪麦克风提高音质和语音拨号的性能。
Noise-cancelling microphone enhances sound quality and voice-dialing performance.
重新灌制，尤其是灌制(一张旧唱片)的新母版，以提高音质。
To master again, especially to produce a new master recording of (an old recording) in order to improve the sound quality.
重新灌制，尤其是灌制(一张旧唱片)的新母版，以提高音质。
To master again, especially to produce a new master recording of (an old recording) in order to improve the sound quality.
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