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1. Oxford American Dictionary

   food chain

   • IPA[ˈfo͞od ˌCHān]

   美式

   • n.
     a hierarchical series of organisms each dependent on the next as a source of food.；a hierarchical system or structure within a particular sphere or group

   • noun: food chain, plural noun: food chains

2. • 釋義

   n.

   名詞

   • 1. a hierarchical series of organisms each dependent on the next as a source of food.
   • ▪ informal a hierarchical system or structure within a particular sphere or group a small paper toward the bottom of the journalistic food chain
   • 2. the series of processes by which food is grown or produced, sold, and eventually consumed they have taken all reasonable steps to ensure that no contaminated products enter the food chain