limestone caves

• 石灰岩洞

limestone caves的用法和样例：

例句

1. Natural limestone caves are very spectacular.
   天然的石灰岩洞是非常壮观的。
2. There was no beguiling myrrh perfume in the air, only some sharp and sour smell that seemed minted during the many centuries she had spent in a limestone cave.
   空气中没有醉人的没药香气，只有一股刺鼻的酸味，似乎是她躺在石灰岩洞里的好几个世纪中产生的。