Mongoose is not standing there to welcome you, but guards against you. He always does.

獴站在那里不是欢迎你，而是防备你。他们总是这样。

youdao

One answer is to plug clusters of equipment (for instance, computers, monitors, printers, modems and routers) into a proper surge protector that not only guards against nasty electrical spikes coming down the line, but also shuts down all the equipment completely when you switch off.

ECONOMIST: The much-talked-of smart grid prepares to enter the home