Now you're told over and over, repeatedly, that desertification is only occurring in arid and semi-arid areas of the world, and that tall grasslands like this one in high rainfall are of no consequence.
这些话你们现在已经听了很多遍， 荒漠化只出现在 世界的干旱和半干旱地区， 像这样的高原 降雨量再高也没有结果。