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。

So, if you're planning on exploring the frigid tundra Hoth-style, it might be helpful.

所以，计划像在霍斯一样寒冷的冻原探险，它可能会有所帮助。

But they're about to begin an epic journey north through the bleak and forbidding tundra.

但它们即将开始一场史诗之旅，向北穿越荒凉而寒冷的苔原禁。

He must have fallen off somewhere out on the tundra.

他肯定是在冰原的某个摔下来。

But whether you're one of those seasoned skeptics of the cold, as long as you have a good latitude, you could see why people Alpine a way to have fundra in the tundra.

但不管是否是那些对寒冷有经验的怀疑论者，只要有一个很好的纬度，就能明白为什么阿尔卑斯山的人们会在苔原上有一个住所。

Over three million wild reindeer migrate across the tundra.

超过三百头的野生驯鹿加入到穿越苔原的迁徙之旅。

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。

As the tundra is very windy, this causes deep drifts to surround the shrubs.

因为苔原经常刮风，这会导致深处的水流包围灌木丛。

But which places—Arctic tundra or Amazon rainforest—are most vulnerable to such climate change?

但是那些更容易受到气候变化影响呢？是北极苔原还是亚马逊热带雨林呢？

For lemmings, small fussy rodents, there is no place more comfortable than the Arctic tundra.

对于旅鼠这种小而挑剔的啮齿类动物来说，没有比北极苔原更舒适的。

And her hands were like two frozen chunks of tundra.

她的手就像冻原上的两个冰块。

" 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。

There was no breeze, nowhere to go for a shade and seemingly endless miles of tundra as far as my eyes could see.

那里没有风，也没有任何荫蔽之处，在我视野里的是一望无际的苔原。

For lemmings, small fussy rodents, there is no place more comfortable than the Arctic tundra.Their presence ensured their well-being of other tundra inhabitants that eat them: owls, Arctic foxes, weasels, eagles, gulls and cranes.

对于旅鼠这种小而挑剔的啮齿类动物来说，没有比北极苔原更舒适的。它们的存在确保其他苔原栖息者的福祉，猫头鹰、北极狐、黄鼠狼、鹰、海鸥和鹤都以它们为食。

The bear recently arrived from Louisville, Kentucky and is part of the Arctic tundra exhibit, which will teach the visitors about the impact of climate changes having on polar bears.

这只北极熊最近从肯塔基州的路易维尔来到这里，是北极苔原展览的一部分，旨在教给游客气候变化对北极熊的影响。

Forest, desert, tundra...Badger's conquered them all. Drop him into a new territory, and he's like a kid in a dirt and snake-filled candy store.Wow!

丛林、 沙漠、 冻原...都被獾哥征服。把他扔进一个新的环境，他简直就无往不利。哇哦！

Next up, a snowy owl normally found in the Arctic tundra shows up 3,000 miles away amid palm trees and beaches of sunny southern California.

接下来的新闻，一只雪鸮出现在加利福尼亚州南部长满棕榈树的阳光沙滩上，但是雪鸮一般生活在距离加利福尼亚州3000英里以外的北极苔原带。

There are five main types of biomes — forest, desert, tundra, aquatic, and grassland — but they don't all fit together perfectly like puzzle pieces.

有五种主要类型的生物群落——森林、沙漠、苔原、水生和草原——但它们并不像拼图一样完美组合在一起。

It may seem strange to have herds of horses and cold-adapted sheep grazing the Arctic tundra. But then again, we're living in strange times.

让一大群马和适应寒冷的绵羊在北极冻原上吃草，这似乎有点奇怪。但话说回来，我们本来就生活在一个奇怪的时代。

While caribou are most common on northern tundras, a subspecies lives in Canadian forests, offering clues to how the ancient caribou might have thrived.

虽然北美驯鹿在北部苔原上最常见，但加拿大森林中生活着一个亚种，这为古代驯鹿是何繁衍生息提供线索。