boil over

The argument boiled over into open war.

争论恶化，演变成公论战。

The disquiet will boil over in the long run.

这种不安情绪终有爆发。

The milk is boiling over.

牛奶出来了。

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

他聚精神地写报告,连锅里稀饭煮了也不知道。