Fighting has broken out all over the city.

战斗在全城爆发了

The authorities have urged people to stock up on fuel in case hostilities break out.

当局已敦促人们储备燃料以防战争爆发。

A person who is allergic to cashews may break out in a rash when he consumes these nuts.

对腰果过敏的人吃了这些坚果可能会出疹子。

Every morning I would break out in a sweat.

每天早上我都会突然满身大汗。

He may break out in a rash when he eats these nuts.

他吃了这些坚果以后可能会长出疹子。

A group of prisoners rushed an officer and managed to break out.

一伙囚犯突然袭击狱警，越狱了。