發(fā)生火災的用法和樣例：
例句
-
在發(fā)生火災時(shí)，打破玻璃并按紅色按鈕。
In case of fire, break the glass and push the red button. -
一旦真的發(fā)生火災，許多人就不知所措，不知道該干什么好了。
Many people are at a loss as to what to do in case of a real fire. -
已經(jīng)事先警告過(guò)我們有發(fā)生火災的危險。
We had been forewarned of the risk of fire/that fire could break out.
