农民们能够使他们的土地肥沃的最好办法之一，就是在土壤中加施氮肥。

One of the best ways farmers can make their land richer is to add nitrogen to the soil.

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但这一地位现在因为水这种令土地肥沃的重要因素越来越匮乏而处境危险。

But this status is at risk because water, the vital ingredient to make the soil productive, is increasingly scarce.

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在故乡弗吉尼亚，他拥有5000英亩土地肥沃的烟草种植园，其中大部分是继承得来。

What he did own was 5, 000 acres of lush tobacco-growing plantation land in his native Virginia, mostly inherited.

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You have the small settled farmer in the more fertile areas.

在土地肥沃地区有一些定居的农民。

耶鲁公开课 - 旧约导论课程节选

If you had five slaves and a good piece of land in Alabama in 1820, you might very likely have fifty slaves and a hell of a lot more land a decade later.

820年,如果你在阿拉巴马州,拥有五个奴隶和一块肥沃的土地,十年后你很可能就会拥有五十个奴隶,以及更多的土地

耶鲁公开课 - 美国内战与重建课程节选

The way these things work, when you are engaged in agriculture, it's natural to go first to that soil, to that patch of land which is known to be likely to produce the best land, the most fertile, the best product, the most fertile land there is.

这一方式是这样运作的,当你从事农业,你自然而然的会首先关注土壤因素,去找出已知土地中最为肥沃的那一块,土地越肥沃,产量越高,就越追求更为肥沃的土地

耶鲁公开课 - 古希腊历史简介课程节选