Unlike the Rockies, in these mountains 与落基山脉不同 这里的山脉
Unlike Antarctica, the Arctic can be reached by land-based predators, 与南极不同, 陆基的掠食动物也可以到达这里
but, unlike all other limestone caves, 但是 和其它石灰岩溶洞不同的是
Salt water, unlike fresh water, does not erode limestone, 咸水与淡水不同 不会溶解石灰岩