“岩洞”的拼音为：yán dòng...

石灰岩上有许多缝隙，故而树根能从岩洞顶部长出来。The limestone is sufficiently fissured for tree roots to have breached the roof of the cave.同时还在这些大石灰岩洞里开采水泥原料。The large limestone caves are also quarried for cement.水沿着地下岩洞流淌。Water trickles throu...

“岩洞”的英语可以翻译为：[地] grotto，abra，abri ...