To their surprise, they found that it climbed over to the fire alarm on the back wall and set it off!

令他们惊讶的是，他们发现它爬到了后墙的火警警报器上，拉响了警报！

youdao

Every hour, set an alarm on your computer or phone to go off.

在你的闹钟或者手机里设定一个以一个小时为间隔的停下来的时间。

youdao

Why does the rustle of sheets wake us up on some nights, but we sleep through the sound of our alarm clocks going off on others?

为什么我们在某些夜晚会被床单发出的沙沙声吵醒，却没有理会那些吵醒别人的闹钟声而睡过头呢？

youdao

There was also the time I made an appearance after somebody's alarm went off on their phone.

BBC: Stafford Hospital inquiry was 'a harrowing time'

The alarm goes off late on Election Day. (Laughter.) Maybe you forget what day it is.

WHITEHOUSE: The White House

Here at Chipzilla's Computex keynote, we just got a demo of a new security feature that causes an alarm to go off on your PC if a stranger attempts to move it.

ENGADGET: Intel demos Bluetooth-based anti-theft alarm for Ultrabooks, we go hands-on (video)