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 .
