But at least these monkeys have a choice -
这些猴子至少还有一个选择

Question

and when the cold bites they have these upper slopes to themselves.
每当严寒袭来这些山坡就成了它们的天下
Even if you have a warm coat
虽然有了暖和的“大衣”
it apparently helps to surround yourself with as many layers as possible.
最好还是与尽可能多的伙伴挤在一起保暖
But at least these monkeys have a choice -
这些猴子至少还有一个选择
if they tire of tree bark and other survival food
如果它们厌倦了树皮和其它残存的食物
they can always descend to lower warmer altitudes
便会搬迁到温暖的低海拔地区
and not return there till spring.
等到春天再返回此地

来自《行星地球第一季第二集 Planet Earth S01E02 山地》第 248 行