单词	food chains
释义	food chain noun 1 : an arrangement of the organisms of an ecological community according to the order of predation in which each uses the next usually lower member as a food source 2 : a hierarchy based on power or importance at the top of the corporate food chain Word History First Known Use 1920, in the meaning defined at sense 1 Kids Definition food chain noun : a sequence of organisms in which each depends on the next and usually lower member as a source of food food chains noun plural of food chain as in hierarchies a series of types of living things in which each one uses the next lower member of the series as a source of food Sharks eat fish that are lower in the food chain. animals that are at the top of the food chain Synonyms & Similar Words Relevance hierarchies groupings ranks gentries levels brackets classes castes tiers strata folk stratifications layers folks orders estates grades echelons places statuses positions standings sub-castes subcastes
随便看	gerbe Gerber convention gerbera gerberae gerberas gerbes gerbil gerbille gerbilles gerbilli gerbillinaes Gerbillus gerbilluses gerbillusses gerbils GERD gereae gereas gered fastball gerefa gerent gerents gerenuk gerenuks gerfalcon

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