除非农村经济能够生产足够的额外粮食来养活更多的人，否则人口不可能增长。
Populations cannot grow unless the rural economy can produce enough additional food to feed more people.
非农产业的不熟练工人，如纱厂的工人和煤矿场的工人大多来自农村。
Unskilled workers in such nonfarm industries as cotton mills and coal mines often came directly from rural villages.
此外，农村以非农业工作为生的黑人要比以往更多。
In addition, nonfarm rural employment is supporting larger Numbers of blacks than in the past.
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