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cave
名词: caver 过去式: caved 过去分词: caved 现在分词: caving 第三人称单数: caves
n.洞穴;山洞
v.挖空;塌落;屈服
例句：用作名词 (n.)
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。
The cliffs are riddled with caves.
岩壁上布满洞穴。
用作动词 (v.)
The roof of the old house caved in.
那栋旧房子的屋顶塌下了。
The enemy had to cave in and surrender.
敌人只好屈服投降。
