An " outlet" (outlet) is a small set of holes in the wall into which you plug something in.

“插座” （插座）是墙上的一小组孔， 您可以将某些东西插入其中。

" To plug something in" means to connect it to a source of electricity so that it will work.

“To plug something in”的意思是将它连接到电源上，这样它就会工作。

So, you can plug something in to get electricity – to get power, or you can plug something in as a way of connecting two pieces of equipment.

因此，您可以插入一些东西来获取电力，或者您可以插入一些东西作为连接两台设备的方式。