你能帮我把灯插上电吗？

Could you ___plug the lamp ___in for me?

这个设备可以让你无需插电就能使用。

This device allows you to use it without having to ___plug it ___in.

在打开电脑之前，确保把它插上电。

Make sure to ___plug the computer ___in before turning it on.