grizzly bears make their winter dens 灰熊将巢筑在背风坡厚厚的积雪之下

90. within the snow on these avalanche-prone slopes.
    都在这些极易发生雪崩的山坡上冬眠
91. And when spring comes, they emerge.
    待春天来临 它们就出洞了
92. All across these mountains,
    在这些山脉中
93. grizzly bears make their winter dens
    灰熊将巢筑在背风坡厚厚的积雪之下
94. 10,000 feet up in the deep snow of leeward slopes.
    海拔高达三千米
95. And while they were half-asleep in the depths of winter,
    他们在隆冬半梦半醒之际
96. their young were born.
    产下幼崽

来自《行星地球 第二季 第二集 Planet Earth S02E02 山脉》第 93 行