Musk oxen and arctic hares are well-insulated against the cold as are the largest grazers of them all, the woolly mammoths.

This herd is regrouping, ready for a long day feeding on the grasses beneath the snow. Mothers need to keep milk flowing for the young.

This baby will need all the care that he can get to make it through its first Beringian winter. Despite the cold, there is still food available. The high winds stop the snow from building up and keep the grass exposed, a lifeline for all Beringia’s grazers.

1 Arctic

adj.北极的;n.北极

参考例句：

They flew over the unlimited reaches of the Arctic.他们飞过了茫茫无边的北极上空。

The sort of animal lived in the Arctic Circle.这种动物生活在北极圈里。

2 hares

n.野兔( hare的名词复数 )

参考例句：

He caught three hares, but one ran a mile. 他逮了三只野兔，跑了一只。 来自《简明英汉词典》

If you run after two hares, you will catch neither. 两只兔都赶，一只也逮不着。 来自《现代汉英综合大词典》

3 herd

n.兽群，牧群;vt.使集中，把…赶在一起

参考例句：

She drove the herd of cattle through the wilderness.她赶着牛群穿过荒野。

He had no opinions of his own but simply follow the herd.他从无主见，只是人云亦云。