He let off steam by yelling at a clerk.

他对一个职员大喊大叫，借以发泄怒气。

I went for a long walk to let off steam.

我想发泄一下，去散了很长时间的步。

People find a new way to let off steam .

人们找到了新的发泄不满的方式。

Occasionally we should be given a chance to let off steam.

应该不时的发泄一下情绪。

Eastern Libyans now have plenty of opportunities to let off steam.

东利比亚人目前有许多机会发泄这种不满。