It set off a chain reaction in the international money markets.
这一事件在国际金融市场上引起了连锁反应。
Who set off the fire alarm?
谁拉响了火警报警器？
We set off at a smart pace.
我们快步出发了。
We set off at a cracking pace.
我们迅速地出发了。
They set off into the country's uncharted interior.
他们出发前往这个国家人迹罕至的内陆。