They are only enabled to produce so many other things besides food,because the food which was in store at the close of the last harvest suffices to maintain not only the agricultural labourers,but a large industrious population besides.

• 它们之所以能生产出除食物以外的许许多多其他物品，仅仅是因为上一次收获结束时储藏的食物不仅足以养活农业劳动者，而且还能养活大量的工业人口。