1.   A report on the arctic tundra of Alaska and the polar bears that inhabit that vast, frozen plain.

2.   As a test subject for new clothing, he is subjected to harsh conditions that simulate extreme environments such as wind-blown mountaintops or Arctic tundra.

3.   A nearly extinct species of goose, distinguished by its bright white rump, had arrived from the Arctic tundra.

4.   From Venezuala rainforests to Pennsylvania woodland to Arctic tundra, George has studied the wild.

5.   Nearly all of the territory is Arctic tundra, the haunt of polar bear and caribou.

6.   Some good and some, well, better left to roam the Arctic tundra where they belonged.

7.   The climate zones in the park can range from temperate rain forest to arctic tundra, all of which can be experienced quite easily within a day.

8.   Izvestia said helicopter pilots were searching the Arctic tundra for the remains of the missile.

a. + tundra >>共 38
frozen 28.57%
arctic 9.52%
canadian 7.14%
northern 4.76%
alaskan 3.57%
fragile 3.57%
siberian 3.57%
snow-covered 2.38%
treeless 2.38%
alpine 1.19%
arctic + n. >>共 203
air 25.31%
refuge 5.87%
chill 4.89%
region 3.06%
ice 2.44%
front 2.32%
water 2.20%
wildlife 2.08%
cold 2.08%
blast 1.34%
tundra 0.98%
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