When you're working on a file, it's saving constantly to RAM but also hopefully to disc, the hard disk so you don't actually lose it if the power goes off.

当你打开一个文件，它不断地保存在内存中，但对于光盘，硬盘，当你断开电源的时候，数据不会丢失。

youdao

Their lives as they live them would not function without electricity, but it is a rare man or woman who, when the power goes off, knows how to look for a burned-out fuse and replace it.

没有电，他们每日的生活便无法运行。然而很少有一个男士或者女士在断电时知道该怎样找出熔断的保险丝并把它换掉。

youdao

It can thus provide an electrical baseload in a way that traditional solar power (which goes off at night) cannot.

它可以提供传统太阳能(晚上就没有了)达不到的基本电力负载。

youdao

When you're working on a file, it's saving constantly to RAM but also hopefully to disc, the hard disk so you don't actually lose it if the power goes off.

当你打开一个文件，它不断地保存在内存中,但对于光盘，硬盘,当你断开电源的时候，数据不会丢失。

哈佛公开课 - 计算机科学课程节选

That, plus the fact that the liquid crystals will revert to transparency if the power goes off, mean an LCD eats batteries.

ECONOMIST: Electronic screens as thin as paper are coming soon

If the power goes off, the shipper gets an e-mail alert.

FORBES: Magazine Article

People, low income or otherwise, tend to ignore their utility until the bill gets too high or the power goes off, he said, and he wonders if people are going to spend time trying to manage their use and implement efficiency measures.

FORBES: Are Smart Meters Smart? Entergy Exec Wants Proof