１）cave / keɪv; kev/ n
hollow place in the side of a cliff or hill, or underground 洞穴.
２）cave v
[I] (usu 通常作 go caving) explore caves as a sport 洞穴探險(xiǎn)運(yùn)動(dòng)
eg：He likes caving. 他喜歡洞穴探險(xiǎn)運(yùn)動(dòng).
(phr v) cave in fall inwards; collapse 塌陷; 坍方; 坍塌
eg：The roof of the tunnel caved in (on the workmen). 隧道頂坍塌（壓住工人）.
eg：(fig 比喻) All opposition to the scheme has caved in. 所有反對(duì)這一計(jì)劃的意見(jiàn)都否定了.
cave-dweller n = caveman.
cave-in n sudden collapse of a roof, etc （屋頂?shù)龋┩蝗惶?
３）caveman / ˈkeɪvmn; ˋkevˏmæn/ n (pl -men / ˈkeɪvmen; ˋkevˏmɛn/)
1 person living in caves, esp in prehistoric times 穴居人（尤指史前時(shí)代的）.
2 (infml 口) man of crude or violent feelings and behaviour 野蠻人; 粗野的人.
hollow place in the side of a cliff or hill, or underground 洞穴.
２）cave v
[I] (usu 通常作 go caving) explore caves as a sport 洞穴探險(xiǎn)運(yùn)動(dòng)
eg：He likes caving. 他喜歡洞穴探險(xiǎn)運(yùn)動(dòng).
(phr v) cave in fall inwards; collapse 塌陷; 坍方; 坍塌
eg：The roof of the tunnel caved in (on the workmen). 隧道頂坍塌（壓住工人）.
eg：(fig 比喻) All opposition to the scheme has caved in. 所有反對(duì)這一計(jì)劃的意見(jiàn)都否定了.
cave-dweller n = caveman.
cave-in n sudden collapse of a roof, etc （屋頂?shù)龋┩蝗惶?
３）caveman / ˈkeɪvmn; ˋkevˏmæn/ n (pl -men / ˈkeɪvmen; ˋkevˏmɛn/)
1 person living in caves, esp in prehistoric times 穴居人（尤指史前時(shí)代的）.
2 (infml 口) man of crude or violent feelings and behaviour 野蠻人; 粗野的人.