The continental shelf here is about 600 meters (2,000 feet) deep, and as the warm water from the open ocean meets the shelf, it continues to flow toward land and rises beneath the floating glacier.
在这个地方的大陆架是大约600米深，当从外面来的暖流碰上大陆架，就会沿大陆架向上升到浮着的冰川下面。
The continental shelf here is about 600 meters (2, 000 feet) deep, and as the warm water from the open ocean meets the shelf, it continues to flow toward land and rises beneath the floating glacier.
在这个地方的大陆架是大约600米深，当从外面来的暖流碰上大陆架，就会沿大陆架向上升到浮着的冰川下面。
The polynyas suggest that the warm water exits the cavity beneath the glacier in three locations where the sea ice has melted.
这些个冰穴说明，有三处暖流从冰川下的凹陷处升上来导致海冰融化了。
Then when the earth started to warm up, the glacier melted and formed the Great Lakes.
后来随着地球变暖，冰川熔化，形成了这五大湖。
Then when the earth started to warm up, the glacier melted and formed the Great Lakes.
后来随着地球变暖，冰川熔化，形成了这五大湖。
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