我测试的这台电脑还有一个古怪的外置麦克风，从机器底部伸出来，而其实电脑顶部已经有了一个内置麦克风。

My test unit also came with an odd little add-on microphone poking out from the bottom, even though it had a built-in mic at the top.

youdao

访谈都很简单：只需要架好摄像机(和一个外置的麦克风，如果你有的话)，然后令其工作。

Interviews are simple: Justset up a camera (and an external microphone, if you have one), and have at it.

youdao