caves

1. [C]洞穴 hollow place in the side of a cliff or hill, or underground

1. vt. & vi. (使)塌陷; 倒塌 (cause to) fall in; give way to pressure
2. vi. 屈服 give in

• explore a cave勘探山洞

• deep cave深深的洞穴

• cave man石器时代的穴居人
• cave period穴居时代

• cave in坍塌,倒闭,屈服
• cave in the bank决堤
• cave in the hat使帽子塌陷
• cave in the roof使屋顶塌陷

cave in塌落；认输

karst cave岩溶洞

cave dwelling窑洞

limestone cave灰岩洞，石灰岩洞

reed flute cave芦笛岩

rock cave岩洞

1. This cave was used by smugglersin the eighteenth century.
   这个洞穴是十八世纪走私的人使用的。
2. The cliffs are riddled with caves.
   岩壁上布满洞穴。
3. We kindled a firebrand in the cave.
   我们在山洞里点燃火把。
4. The boys huddled together in the cave to keep warm.
   男孩子们在山洞里挤成一团取暖。

1. The roof of the old house caved in.
   那栋旧房子的屋顶塌下了。
2. The enemy had to cave in and surrender.
   敌人只好屈服投降。
3. They refused to cave in to the terrorists'demands.
   他们拒绝向恐怖分子的要求屈服。