cave in

• You said it wouidn ' t cave in ! you damned idiot
  你说不会塌的！你这个死白痴！
• Bryophytes of karst caves in guilin area , china
  中国桂林岩溶洞穴苔藓植物研究
• Fortunately they hid themselves in a cave in time
  幸运的是他们及时躲进了一个山洞。
• The roof is dangerous and could cave in at any time
  屋顶很危险，任何时候都会坍塌。
• They went to the cave in quest of hidden treasure
  他们到山洞去以寻找宝藏。
• The domed caves in qiuzi and xumishan grottos
  须弥山石窟与北朝原州历史文化
• Some questions of weizi cave in longmen grottoes
  关于龙门魏字洞的几点思考
• The roof of the tunnel caved in ( on the workmen )
  隧道顶坍塌（压住工人）
• An ascetical ' s cave in the 青 朴 mountain
  青朴山上的一个苦行僧的洞穴里。
• Wanxiang cave is one of the four most famous caves in china
  万象洞是中国四大名洞之一。