美国只有百分之二的人口从事农业生产，而阿富汗百分之80是农业人口。

In the U. S., agricultural production employs about two percent of the population. In Afghanistan, it's about 80 percent.

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农民是从事农业生产的劳动者，增加农民收入重在增加农民的农业生产收入。

Farmers are workers engaged in agricultural production. To raise their revenue must increase the partial incomes of their agricultural production.

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超过三分之二的越南人口都从事农业生产，而且农业产品是越南的主要出口商品。

Vietnam's agricultural sector employs more than two-thirds of the country's population and accounts for a major proportion of exports.

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If you look at the percent of time people in society were involved in various activities and broken into agriculture versus everything else, in ancient Egypt it looked like this.

如果你留意一下,人们从事各种社会活动的时间比例,被分为农业生产和其他活动两类,在古埃及,时间分配是这样的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选