Someone set off a fire extinguisher.

有人打开了灭火器。

《柯林斯英汉双解大词典》

The news set off a continent-wide health scare.

这一消息引起了整个大陆的健康恐慌。

《柯林斯英汉双解大词典》

Panic on the stock market set off a wave of selling.

股市恐慌引发了一轮抛售潮。

《牛津词典》

And as they set off across the wild country of west Texas, their mother and father could hardly hear a thing.

VOA: special.2009.11.28

So we left off last time with looking at a bit of coding and teasing you with the upcoming problem set.

我们上次讲到了查看一些代码,并且给你们带来这下面的习题。

哈佛公开课 - 计算机科学课程节选

But it's really a chance, especially for those less comfortable, to be set off on a very specific path.

这的确是一个机会，特别对于那些不怎么舒适的，这是通过,特殊途径开始的好机会。

哈佛公开课 - 计算机科学课程节选

That set off a frenetic search through an area marked by dense brush and steep terrain.

CNN: See daring rescue of hiker

One blockbuster from Pouletty would likely set off a wave of anti-addiction drug development.

FORBES: Drug Warrior

One blockbuster from Pouletty would likely set off a wave of antiaddiction drug development.

FORBES: Drug warrior