Applying both methods to worldwide data, the scientists say industrial fishing over the past decades has not simply worked its way downwards from the top of the food chain -- it has gone upwards, too.

如果将关注食物链顶端和底端的方法同时应用到全球性数据上，那么，科学家们得出的结论是，过去10年的工业捕渔更偏向捕食低食物链鱼类，而对高食物链等级的鱼类而言，它们的食物总量减少了将近一半，倘若按照食物链理论的逻辑，现存高食物链等级的鱼类总数是增加了而不是减少了，因此，不能够简单地认为，工业“捕渔”导致鱼类总体的数量减少。

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Heavy metals also can be introduced into the food chain by widespread industrial pollution.

重金属也可通过广泛的工业污染进入食物链。

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Corn-fed cows on industrial feed lots are another part of this dangerous food chain.

在工业化的养殖厂，牛以玉米为食。这是食物链中又一个危险的环节。

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Our traditional view of the food chain is that large companies manage it, industrial farms produce for it, food ingredient experts intervene with flavor enhancing and preservation chemicals, and fast food joints or supermarkets shift food to the public, who eat it, often to their detriment.

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It recently launched four agro-industrial businesses supplying staple products such as milk and maize flour, and its retail-food chain, Mercal, aims to cover 60% of the market.

ECONOMIST: Venezuela