The keyboard has a built-in number pad, and all you need to do is press the " num lock" key to use it.

键盘内置数字键盘，只需按下“num lock” 键即可使用。

This keyboard has a built-in number pad, and all you have to do is press the " num lock" key to use it.

这个键盘有一个内置的数字键盘，你所要做的就是按下“num lock” 键来使用它。

Dave says, " all you need to do is press the 'num lock' key to use it." On some keyboards the number pad is separate from the rest of the keys.

Dave 说：“您需要做的就是按‘num lock’键来使用它。 ” 在某些键盘上， 数字键盘与其他键是分开的。