The rainforest now is situated in the largest drainage basin in the world, and all that water would carry with the now infertile soils.

现在的热带雨林位于世界上最大的流域，所有的水都带着贫瘠的土壤。

What remained was an Amazon full of dense vegetation and swaths of infertile soil that appeared to be untouched by humans when, in fact, humans had been engineering it for centuries.

留下的是充满茂密植被的亚马逊河和大片贫瘠的土地，这些土地似乎没有被人类染指过，而实际上，人类已经对其进行了几个世纪的改造。