carry wet air to the middle of continents. 将潮湿空气带到了大陆中部
but its distribution over the land is far from even. 不过 水在陆地上的分配极不平均
Deserts cover one third of the land's surface 沙漠覆盖了地球表面的1/3
The water it carries condenses into clouds 携带的水气开始凝结 汇集成云
and then falls as the life giving rains of the monsoon. 然后变成季风雨落到地面 滋润大地万物
So air currents powered by the sun 至此 由太阳驱动的大气环流
blowing sand halfway round the world 沙子被吹到地球的另一头