In summer the camels can't stray far from waterholes. 在夏天 骆驼不能远离水坑

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
34. they can travel widely in search of mates.
    它们便能长途跋涉寻找配偶
35. Today less than a thousand of these desert specialists remain in the wild.
    今天 这些沙漠专家的 野生数量已不足1000只

来自《行星地球 第一季 第五集 Planet Earth S01E05 沙漠》第 32 行