单词	food chain
释义	food chainˈfood chain noun the food chain a)science, biology animals, insects, and plants considered as a group in which a plant is eaten by an insect or animal, which is then eaten by another animal and so on:  Pollution is having a negative effect on the food chain in the bay. b)humorous the system in society or an organization in which people at each rank have authority and control over the people in the rank below them:  I was near the bottom of the company food chain.
随便看	ouch oughta oughtn't ought to Ouija board ounce our Our Father Our Lady Our Lord ours ourselves -ous oust ouster out out- outage out-and-out outback outbalance outbid outboard motor outbound out box

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