音频源就像是一个控制器，用于启动和停止播放该剪辑，并修改其他的音频属性。

The Source is like a controller for starting and stopping playback of that clip, and modifying other audio properties.

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它有一个音量控制器与麦克风开关的打开或关闭它和衣领剪辑。

It has a volume controller and a collar clip along with a microphone switch which turns it on and off.

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