Winter is the time for breeding. 冬季是交配繁殖的时节

27. And with good reason,
    这当然有充分的理由
28. for filling the stomach with snow could be fatal.
    因为肚子里装满雪将是致命的
29. The camels must limit themselves to the equivalent of just 10 litres a day.
    骆驼必须限定自己 每天只能吃10升左右的雪
30. Winter is the time for breeding.
    冬季是交配繁殖的时节
31. This extraordinary performance is a male Bactrian camel's way of attracting the attention of a passing female.
    这种奇怪的表演是公双峰驼 吸引路过的母骆驼的一种方式
32. In summer the camels can't stray far from waterholes.
    在夏天 骆驼不能远离水坑
33. But now, with mouthfuls of snow lying everywhere
    可是现在 遍地都是唾手可得的雪

来自《行星地球 第一季 第五集 Planet Earth S01E05 沙漠》第 30 行