boil over

1.The argument boiled over into open war.

争论恶化，演变成公开论战。

2.The disquiet will boil over in the long run.

这种不安情绪终有一天会发。

3.The milk is boiling over.

牛奶开得溢出来。

4.He was writing his report so attentively that he didn’t know the rice gruel in the pot had boiled over.

他聚精会神地写报告,连锅里稀饭煮溢也不知道。