- This is Guelta d'Archei in Central Africa.
这里是非洲中部的沙漠绿洲 - A hostile, seemingly empty world.
一片不毛之地 - There is life here.
却孕育着生命 - But it exists at the very limits of survival.
这里的生命时时刻刻处于危机之中 - For this is a world with almost no water.
因为这是一个水资源极度缺乏的世界 - Lands like these cover over a third of our planet.
像这样的土地覆盖了地球上超过三分之一的面积