It's the only one of its family that could live above the snow line.

这是鹦鹉家族中唯一能生活在雪线之上品种。

That forms the snowline, which occurs at different heights around the planet depending on climate.

这使雪线得以形成。球上各处雪线高度有所不同是依据气候所致。

At the upper timberline the trees begin to become twisted and deformed.

上行树界线，和雪线一样，在最高，在极最低。从极区平面到干燥亚区4 500米处以潮湿区3 500米至4 500米处都有上行树界线。树界线内通常是常绿树，它们和处于上行树界线处极端恶劣环境中生长落叶树木相比，具有一定优势。然而，在部分区也有由落叶阔叶林组成树界线。例如，在喜马拉雅部分区，桦树就在树界线上。

Above the snow line, glacier lakes are all covered with pure white snow all year round.

雪线处，是一座座常年白雪皑皑冰湖。

But only the carbonaceous chondrites contain water - as well as lots of carbon, if you couldn't tell from their name.

你从它名称中也可以得知它们有很多碳， 它们之所以有水是因为它们是在太阳雪线以外形成。 此外它们水中有氘比例。

They form above the snowline, or the lowest elevation where there’s ice and snow all year round.

它们形成在雪线之上，或者是全年都有冰雪最低。

Secondly, the mountain lies near the tropics, so the snowline is high, and the glaciers relatively small, barely big enough to widdle it down.

其次，这座山位于附近，所以雪线较高，且冰川相对较小，不太可能大到把它冲下来。

As the snow line retreats further and further up these peaks, there is less and less space for wildlife, and that is a challenge for one of the most majestic of all mountain creatures.

雪线向山峰处退去，野生动植物生存空间日益减少，恶化条件威胁着一种美丽山动物生存。

But at rare intervals warm rains and warm winds invade the mountains and push back the snow line from 2000 feet to 8000, or even higher, and then come the big floods.

但偶尔会有暖雨和暖风侵入山区，将雪线从 2000 英尺推回 8000 英尺，甚至更高，然后发生大洪水。