名詞 cave in:

1. the sudden collapse of something into a hollow beneath it
   同義詞：subsidence

動詞 cave in:

1. break down, literally or metaphorically
   同義詞：collapse, fall in, give, give way, break, founder

1. The roof is dangerous and could cave in at any time.
   屋頂很危險(xiǎn)，任何時候都會坍塌。
2. All opposition to the plan has caved in.
   這個計(jì)劃的反對派全部屈服了。
3. 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?
   總統(tǒng)先生，喬治·布什，似乎正接到各方面的建議去增稅。不知你是否認(rèn)為他能守住陣腳，整整四年不增稅。萬一他［向壓力］低頭而增稅，你對他是否會大失所望？
4. In the face of enough witness, the criminal caved in.
   在足夠的證據(jù)面前，這個罪犯屈服了。