cave in
phrasal verbcave in (on somebody/something)
- (of a roof, wall, etc.) to fall down and towards the centre
塌落；塌陷；坍塌 - The ceiling suddenly caved in on top of them.
他们头顶的天花板突然塌落。
- The ceiling suddenly caved in on top of them.
cave in (to something)
- to finally do what somebody wants after you have been strongly opposing them
让步；屈服；屈从 - The president is unlikely to cave in to demands for a public inquiry.
总统未必会同意进行公开调查。
- The president is unlikely to cave in to demands for a public inquiry.