1.But it was also compounded.
这也是混合的。
2.What the Sahara experienced was um... sort of "runaway drying effect".
撒哈拉沙漠所经历的变化,嗯,是一种“逃离干燥效果”,
3.As I said the monsoon migrated itself, so there was less rain in the Sahara.
就像我说的季候风本身会迁移,所以撒哈拉沙漠的雨水变少,
4.The land started to get drier, which in turn caused huge decrease in the amount of vegetation, because vegetation doesn't grow as well in dry soil, right?
土地开始变干燥,于是造成了植物的大量减少,因为植物在干燥的土壤里无法很好的生长。
5.And then, less vegetation means the soil can't hold water as well, the soil loses its ability to retain water when it does rain.
后来,植物太少也导致了土壤无法保留住水分,土壤也失去了在下雨时保持住水分的能力。
6.So then you have less moisture to help clouds form, nothing to evaporate for cloud formation.
所以,后来湿度不够也难以形成云层,因为没有可以蒸发的能形成云层的东西。
7.And then the cycle continues, less rain, drier soil, less vegetation, fewer clouds, less rain etc. etc..
然后形成了这样的循环,雨水少,土地变干燥,植物变少,云层减少,下雨就更少,如此循环下去…