Above the tree line there is a zone that is generally called alpine tundra.

林木线以上区域通常被叫作高山冻原。

She remembers the tundra with fewer trees when she was a child.

她记得小时候的苔原上树木较少。

He must have fallen off somewhere out on the tundra.

他肯定是在冰原的某个地方摔下来了。

Over three million wild reindeer migrate across the tundra.

超过三百万头的野生驯鹿加入到穿越苔原的迁徙之旅。

And her hands were like two frozen chunks of tundra.

她的手就像冻原上的两个冰块。

The tundra is released from its prison of snow and ice.

苔原被从冰雪的牢笼中解放出来。

" Let us gather tundra grass and thatch the roof, " Maud said.

" 我们还是去弄苔原草苫屋顶吧。" 茅德说。

Beavers may be following the northward expansion of vegetation onto the tundra.

海狸可能是在追随冻原植被向北扩展的脚步。

Won't the shrub stop and it'll turn back into tundra?

灌木丛会停止生长并变回苔原吗？

An enormous amount of territory is being transformed from tundra into woodland.

大量的领土正在从冻土带变成林地。