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Winter is the time for breeding.
冬季是交配時節
This extraordinary performance is a male Bactrian camel's way of attracting the attention of a passing female.
這種奇怪的表演是公雙峰駝吸引路過的母駱駝的一種方式
In summer, the camels can't stray far from waterholes.
在夏天，駱駝不能遠離水坑
But now, with mouthfuls of snow lying everywhere, they can travel widely in search of mates.
可是現在，遍地都是唾手可得的雪，它們便能長途跋涉尋找配偶。
Today, less than 1 ,000 of these desert specialists remain in the wild.
今天，這些沙漠專家的野生數量已不足1000只
The Gobi, hostile though it is, is their last stronghold.
戈壁盡管環境險惡，卻是它們最后的據點
There is no other desert quite like the Gobi. But why is this place a desert?
別的沙漠都和戈壁不太一樣。為什么這里會成為沙漠呢
There is one simple and massive cause. The Himalayas.
這里有一個簡單而又重要的原因。喜馬拉雅山脈。
Clouds blowing from the south hit this gigantic barrier.
從南方過來的暖濕氣流撞上了這面巨大的屏障
As they're forced upwards, so they empty their moisture on the mountain slopes,
在被迫抬升的過程中，水汽在山坡上逐漸凝結，
leaving little for the land on the other side.
只有一小部分到達另一邊的土地
From space, deserts are very conspicuous.
從太空中看，沙漠非常顯眼
Dunes of sand hundreds of miles long streak their surface.
綿延數百英里的沙丘像是一條條皺邊花紋
With no cloak of vegetation to conceal them, strange formations are exposed in the naked rock.
由于沒有植被覆蓋，赤裸的巖石顯露出奇特的造型。
