1. The enemy had to cave in and surrender.
   敌人只好屈服投降。
2. For some days he stayed in his cave behind his wall.
   他呆在墙后的洞里好几天。
3. A girl standing at the mouth of the cave beckoned him in.
   站在洞口的一个姑娘摆手叫他进去.
4. The wall caved in without the slightest warning.
   事先大家毫无察觉的情况下墙塌了。
5. They went to the cave in quest of hidden treasure.
   他们到山洞去寻找宝藏。

　1个名词解释

　1个动词解释