No limits whatever are placed to the productions of the earth; they may increase forever.
对地球的生产没有任何限制;它们可能永远增长。
-- Thomas Robert Malthus 马尔萨斯
No limits whatever are placed to the productions of the earth; they may increase forever.
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No limits whatever are placed to the productions of the earth; they may increase forever.
对地球的生产没有任何限制;它们可能永远增长。
-- Thomas Robert Malthus 马尔萨斯
