如同动物之间通过食物链相联系，人与人之间也出现了一种类似食物链的关系。
Just like the animals connected in the food chain, there is also a relationship like the food chain supposed to exist between the strong and the weak.
如同动物之间通过食物链相联系，人与人之间也出现了一种类似食物链的关系。
Just like the animals connected in the food chain, there is also a relationship like the food chain supposed to exist between the strong and the weak.
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