limestone caves的用法和樣例：
例句
- Natural limestone caves are very spectacular.
天然的石灰巖洞是非常壯觀(guān)的。 - 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.
空氣中沒(méi)有醉人的沒(méi)藥香氣，只有一股刺鼻的酸味，似乎是她躺在石灰巖洞里的好幾個(gè)世紀中產(chǎn)生的。
