It is the longest tidewater glacier in North America.

它是北美最长的潮水冰川。

A tidewater glacier is one that begins in a mountain valley and flows all the way to a body of water.

潮水冰川是源于山谷并一直流入水体的冰川。

The granddaddy of all tidewater glaciers is the Bering, the largest and longest glacier in North America.

所有潮水冰川的鼻祖是北美最大最长的冰川白令冰川。

20 of these tidewater glaciers reside here in Prince William Sound, the highest concentration of them in the world.

这些潮水冰川中有 20 个位于威廉王子湾，是世界上冰川最集中的地方。

He said, " We should be very concerned about North Greenland warming because that region has a dozen sleeping giants in the form of wide tidewater glaciers and an ice stream."

“我们应该非常关注北格陵兰岛的变暖，因为该地区有十几个沉睡的巨人，它们以宽阔的潮汐冰川和冰流的形式存在。”