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雪线之的品种。

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

行树带界线，和雪线一样，热带最高，极地最低。从极地地区的海平燥的亚热带地区的海拔4 500米处以及潮湿的热带地区海拔3 500米至4 500米处都有行树带界线。树带界线内通常是常绿树，它们和处于行树带界线处极端恶劣环境中生长的落叶树木相比，具有一定的优势。然而，部分地区也有由落叶阔叶林组成的树带界线。，喜马拉雅的部分地区，桦树就树带界线。

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的冰湖。

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

这形成了雪线，其全球不同高度出现，取决于气候条件。

Thence, perhaps a climb might be found to take him up to the precipice that came below the snow.

于是，或许能找一条攀爬的路径，将他引向雪线下方的悬崖。

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

它们形成雪线之，或者是全年都有冰雪的最低海拔。

So there's something we call the snow line, which is somewhere in our solar system out around between Mars and Jupiter.

所以我们称之为雪线，它位于我们的太阳系中， 火星和木星之间某个地方。

The lower brown-black slopes rise up gently until they meet the fringes of the snowline and the volcano grows to a series of craggy white peaks and summit craters.

较低的棕黑色山坡缓缓升，直与雪线边缘相遇，火山逐渐形成一系列崎岖的白色山峰和山顶火山口。

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，野生动植物的生存空间日益减少，恶化的条件威胁着一种美丽山地动物的生存。

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。