In general, they all work the same: the connector contains pins that go into ports on your video output device which transmit video, audio, and more over the wires in the middle.
在一般情况下，它们是构造是一样的：含有针的插头连接到传输视频音频输出端口，中间部分是线缆。
The sound file could not be played. Your device may not support audio output.
声音文件不能播放。设备可能不支持声音输出。
A devoted audiophile might quibble with the nano's audio output compared to a higher-end component, but most iPod nano owners will be using the device on the go, and in that context, it sounds great.
一个音频发烧友也许会拿nano的音频输出和高端的配件相比来挑刺，不过大多数iPod nano的所有者都只是在路上用它听听音乐而已，在这种情况下，它的音质很不错了。
Note that when the currently active audio output device does not support volume control (such as an A2DP device), the volume slider is replaced by the appropriate device name.
注意如果当前的声音输出设备不支持音量控制(就像设备A2DP)，音量滑块就不会显示，取而代之的是设备名称。
The selected voice could not be initialized. You may not be able to play this voice. Please try selecting a different voice or a different audio output device.
无法初始化选定的声音。您可能无法播放此声音。请选择其他声音或不同的音频输出设备。
Your device may not support audio output.
设备可能不支持声音输出。
Your device may not support audio output.
设备可能不支持声音输出。
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