The mold begins in New York City on a map with very concentrated food sources in the cities but few nutrients in the countryside.
模具开始就在食物来源非常集中城市的，但农村一些营养素地图来自纽约市。
There are unknowns in this too, such as the degree to which radioactivity will become concentrated in the food chain.
也还有一些未知影响在里面，像是放射物在食物链里的富集程度。
The current global food system worked well in a world of cheap, stable energy prices which allowed food to be grown in concentrated locations and transported over huge distances to meet demands.
当能源价格低廉而稳定的时候，人们可以集中种植粮食，并将产品输送到遥远的需求市场。
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