To capture moisture from sea fog , the welwitschia , also known as tree tumbo , has evolved special leaves .
为了利用海雾获得水分,千岁兰(也有人叫做通博树treetumbo)进化出了很特别叶子。
In africa 's namib desert , welwitschia plants have been known to live for more than a thousand years on the dew that they absorb through their long , porous leaves .