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汉语拼音：

多年积雪区的下界。雪线以上的降雪量大于融雪量而成为多年积雪(或永久积雪)。一般纬度高的地方雪线低，纬度低的地方雪线高；湿润的地方雪线低，干燥的地方雪线高。

• The mountains had not reached the height of the snow lines in the early Pleistocene ; so glaciers did not develop then.

  提出在早更新世时，由于山体未达到当时冰川发育的雪线高度，所以未发育冰川。

• The upper timberline, like the snow line, is highest in the tropics and lowest in the Polar Regions.

  上行树带界线，如同雪线一样，通常在热带地区海拔位置最高而在极地地区海拔位置最低。

• The upper timberline, like the snow line, is highest in the tropic and lowest in the polar regions.

  上行树带界线，比如雪线，在热带最高在极地最低。

• In colder climates, the snowline on mountains starts lower down, and erosion takes place at lower altitudes.

  在较寒冷的气候中，山峰的雪线起始位置较低，因此冰蚀作用在较低的海拔高度就会发生。

• Even the sky from extreme snow-line, looking at the school, in horses and diffuse.

  目极雪线连天际，望中牛马漫逡巡。

• Mountain glaciers have shrunk, snow cover has decreased in some areas, and areas of permafrost have been thawing.

  山地冰川收缩了，在许多地方雪线已经下降，一些永久冰冻带已经开始融化。

• Often stretched to the mysterious mist, below the snowline increased the illusion.

  常伸展到雪线以下飘渺的云雾，增加了这种幻觉。

• Some plants can even survive in favorable microhabitats above the snow line.

  在雪线以上，一些植物甚至能在有利的小环境中生存。

• The plant is found at such altitude as to be within roughly 200 m distance of the snowline.

  这种植物生长地如此之高，以至离雪线只有约200米。