Let's just say that you have a child who lives up here, say in this cul-de-sac, and is friends with a child who lives over here.
假设有你有一个孩子住在这儿,在这条死胡同里,他有个朋友住在这
The animal that eats its offspring, those genes are a biological dead end.
吃掉自己后代的动物,他们的基因走进了生物学的死胡同。
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