现在看来，Terra Preta 丰富的土壤可以解释这些文明是如何养活自己的。
Now it seems the richness of the Terra Preta soils may explain how such civilizations managed to feed themselves.
确实，在一些雨水和地表水丰富并且地质和土壤环境理想的地方，地下含水层可以很快就得到补充。
In some places it is indeed replenished quite quickly if rain or surface water is available and the geological and soil conditions are favourable.
淡水资源和海洋资源日益受到污染；土壤和一度丰富多产的渔场日趋贫瘠。
Freshwater and Marine resources are increasingly polluted; soils and once-prolific fisheries are growing barren.
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