where there is a network of blood vessels close to the surface of the skin 那里的血管网比较贴近皮肤表层
So they lick saliva on to their forearms 所以它们将唾液抹在前臂上
In the full sun the temperature on the ground soars to 70 degrees. 待到阳光最毒辣之时 地面温度已升高至70℃
The sun's heat and power to evaporate water 太阳的热力使水蒸发
With no cloak of vegetation to conceal them 由于没有植被覆盖
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
Here the strategy is to take little and often. 但在这里的饮水策略却是少而频繁
The air is just too cold and too dry for it to do so. 又冷又干的空气使它们无法解冻
bring snow to the Gobi Desert in Mongolia. 夹杂着风雪横扫蒙古戈壁沙漠
the temperature in midwinter can drop to minus 40, 但是到了冬至却能降至零下40℃