boil over

柯林斯词典

1. PHRASAL VERB When a liquid that is being heated boils over, it rises and flows over the edge of the container. 煮沸而溢出
Heat the liquid in a large, wide container rather than a high narrow one, or it can boil over. 液躰加熱時要放進寬大的容器裡，不要放進細長的容器裡，否則它會溢出來。
2. PHRASAL VERB When someone's feelings boil over, they lose their temper or become violent. (情緒) 失去控制
Sometimes frustration and anger can boil over into direct and violent action. 有時無奈和憤怒會失去控制，變成直接的暴力行爲。