boil over
phrasal verb with boil verb uk/bɔɪl/ us/bɔɪl/
(PERSON)
（形势或负面情绪）失去控制，爆发
If a difficult situation or negative emotion boils over, it cannot be controlled any more and people start to argue or fight.
(LIQUID)
（液体）沸溢，煮溢
If a liquid that is being heated boils over, it rises up and flows over the edge of the pan.
Take the milk off the heat before it boils over. 趁牛奶还没有煮沸溢出，把它从火上拿下来。
（容器）沸溢
If a pan boils over, the liquid in it rises up and flows over the edge.
That saucepan is boiling over. 锅里的东西煮得溢出来了。