When we are directed to something the team think might be suitable we then go and physically scope it out, measuring up and drilling along the edges to check the ice thickness.

当行动小组指出一处他们认为可能适合降落的地区后，我们就去那里实地察看和丈量，同时沿着其周边冰面钻孔以测量冰层厚度。

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Very slowly the edges are ground down until a gap is formed between the eddy and the surrounding ice.

慢慢的边缘开始结冰直到涡流和边上形成的冰有空隙为止。

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But at the edges, where the ice has had a chance to melt, all that's left is powdery sand.

但是边缘上的冰比较容易融化，留下粉末状的沙土。

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The indirect effect is that it can "pre-condition" the ice shelves that float at the edges of the ice sheet.

BBC: West Antarctic Ice Sheet warming twice earlier estimate

He splashed over to the foot of the stairs and looked up at a ladder of water coming down, a scrim of ice on the edges like a mountain stream.

NEWYORKER: Idols

"A race is going on in Greenland between these competing forces of snow build-up in the interior and ice loss on the edges, " explained Dr Zwally.

BBC: NEWS | Science/Nature | Polar ice sheets show net loss