Definition: the sudden failure of a system, organization, business, etc. Level: B2
经济不景气导致了数千家小企业的倒闭。
A poor economy has caused the ___collapse of thousands of small businesses.
两国之间的谈判濒临破裂。
Negotiations between the two countries are on the brink of ___collapse.
在教书十年后，他精神崩溃了。
He suffered a mental ___collapse after ten years' teaching.
