Here, in the deciduous forests of eastern Russia 这里是俄罗斯东部的落叶林
Broad leaves must be shed in winter for their damage by frost. 由于严寒的原因 阔叶树得在冬天落叶
In the chaos a calf is separated from its mother. 混乱中一只小鹿与它的母亲失散了
Some herds travel over 2,000 miles a year in search of fresh pastures. 有的鹿群一年得走上2000多英里 才能到达新鲜草场
Nearly half of all cubs die in their first year out on the ice. 大约有近一半的幼熊 会在第一年的冰上历险中丧生
They've grown enormously in confidence, 它们的信心日益膨胀
Being so small, the cubs are easily chilled and they will be more comfortable resting in the den. 幼小的熊崽很容易冻僵 躲在洞穴中可能会更舒服些
She has been in her den the whole winter. 整个冬天 它都在洞穴里度过