cave-in

n. 陷落

例句与用法：

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。

In the face of enough witness, the criminal caved in.

在足够的证据面前，这个罪犯屈服了。

词形变化：

形容词: cave-dwelling |

详细释义：

n.

陷落; 塌陷