The state of being destroyed or becoming extinct, as a species of animal.
作为动物的一个物种，处于被消灭或消亡的状态。
Milk is not a natural food for any species of animal except for the very young fed by their own mother.
除了母乳之外，奶对任何物种而言都不是天然食品。
Milk is not a natural food for any species of animal except for the very young fed by their own mother.
除了母乳之外，奶对任何物种而言都不是天然食品。
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