刀耕火种的传统耕作方式已经使土壤枯竭了。
Traditional slash and burn farming methods have exhausted the soil.
尼罗河水流量的减少，使埃及深感其作为地区大国的作用正日益受到威胁，沙漠农场也面临枯竭。
Threatened by a cut in Nile water supply, Egypt sees its leading regional role draining away and its desert farms running dry.
毁林开荒也许会使毁林者变富，但从长远来看，这种做法会从整体上使地球枯竭。
Clearing forests may enrich those who are doing it, but over the long run it impoverishes the planet as a whole.
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