灰岩干谷是由于扩大而形成的一个大的拉长的天坑。
Uvala is a large elongate sinkhole resulting from enlargement.
地底挖矿使地面呈呈“蜂窝乳酪”状，全镇遍布大的灰岩坑，很多较大的坑洞深到足以把整个人吞没。
The mines that were dug beneath the town are turning the ground into Swiss cheese, as massive sink holes develop throughout the town -- many big enough and deep enough to swallow a man whole.
应用推荐