cave in

基本解释

She scrabbles at them but, as she scrapes, the sides cave in on top of her hands. The hole remains shallow.
她试着将它们刮到一起，但当她刮的时候，两侧的石子就会塌落在她的手上，洞还是很浅。
From the pinky, limestone walls of its great basilica, we see people snaking down to a small cave in the valley below.
我们站在粉色石灰岩的教堂墙上，看见下面山谷中有人排队进入到一个小小的洞穴里。
The reason is the discovery, in 2004, of some peculiar seashells of that age in Blombos, a seaside cave in South Africa.
原因就是在2004年，在南非海边的一个洞穴，布隆伯斯洞中发现了一些罕见的海贝。

Scientists believe sandals found in the Arnold Research Cave in the American state of Missouri are about seven thousand five hundred years old.
Edmund Spenser in the Faerie Queene does not bring Sir Guyon with his palmer through the cave of Mammon.
埃蒙德·斯潘塞在《仙后》中并没有让盖恩,带着朝圣者穿越贪婪之神的洞穴。
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The cave of Mammon is the home of Mammon, the money god, who stores in his cave all of the wealth and all of the honor that human beings spend so much energy striving for.
贪欲之神的洞穴是他的住所，这位掌管钱财的神在他的洞里藏着,人类耗费大量精力想要求得的,所有财富和荣誉。
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Many had assumed that he would cave in at some stage during the long Hillsborough nights.
ECONOMIST: Northern Ireland

If something such as a roof or a ceiling caves in, it collapses inward.
If you cave in, you suddenly stop arguing or resisting, especially when people put pressure on you to stop.