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1·Your computer has a TV tuner card installed.

您的计算机安装有电视调谐卡。

2·You don't need a TV Tuner card or any additional device.

你不需要拥有一个电视调谐器或者任何附加的设备。

3·It would have received more for the tech specs if there were a TV tuner and a discrete graphic card.

它可能会收到更多的为技术规格，如果有电视调谐器和一个离散的图形卡。