the sudden collapse of something into a hollow beneath it
同义词:subsidence
动词 cave in:
break down, literally or metaphorically
同义词:collapse, fall in, give, give way, break, founder
cave in例句
The roof is dangerous and could cave in at any time.
屋顶很危险,任何时候都会坍塌。
All opposition to the plan has caved in.
这个计划的反对派全部屈服了。
Mr.President, George Bush, has been receiving advice on all fronts, it seems, to raise taxes. I wondered if you think he can hold the line and not raise taxes for a full four years. And if he should cave in and raise them, would you be deeply disappointed in him?