plug

这个电器需要一个三脚插头。

This appliance requires a three-pin ___plug.

如果插头接线不正确，可能会很危险。

If a ___plug is wired incorrectly, it can be dangerous.

如果插头损坏了，你应该立即更换它。

If a ___plug is damaged, you should replace it immediately.