短語(yǔ)詞組用作名詞 (n.)動(dòng)詞+～explore a cave 勘探山洞形容詞+～deep cave 深深的洞穴～+名詞cave man 石器時(shí)代的穴居人cave period 穴居時(shí)代用作動(dòng)詞 (v.)～+副詞cave in 坍塌,倒閉,屈服cave in the bank 決堤cave in the hat 使帽子塌陷cave in the roof 使屋頂塌陷短語(yǔ) 返回 caves