Insects are fairly low down (on) the food chain.

在食物链中，昆虫是相当低的一级生物。

《牛津词典》

The effect was to disrupt the food chain, starving many animals and those that preyed on them.

后果是打断食物链，使许多动物和捕食它们的动物饿死。

《柯林斯英汉双解大词典》

The whole food chain is affected by the overuse of chemicals in agriculture.

整个食物链因农业中过度使用化学制品而受到影响。

《柯林斯英汉双解大词典》

In two thousand one, genetically modified corn made by Syngenta was found in the food supply chain without approval.

VOA: special.2011.03.08

The film shows the important role these bees play in the world's food chain.

VOA: special.2009.03.25

Sharks play an important role in the food chain.

VOA: special.2009.04.03

The consequences stretch from one end of the food chain to the other, as higher food prices prompt a response.

ECONOMIST: No matter how bad things get, people still need to eat

He said while it was not a food safety issue, it was "another example of the integrity of the food chain being shown to be substandard".

BBC: 'Cod fraud' uncovered by BBC NI food sample tests

Kevin Morgan, a professor at Cardiff University and the author of The School Food Revolution, a book about the supply chain behind cafeteria food, said the supply network was complex and should be better regulated.

BBC: Horsemeat: 'Food fraud' not put health at risk, says expert