Gene "B" makes an animal care only for itself.

基因B让动物只关心自己。

youdao

B: The only animal product I eat is eggs(?check).

我吃的唯一荤类食品是蛋。

youdao

The more miles an animal runs, the more B.

动物跑的里程越多，就会有越多的B。

youdao

The more miles an animal runs, the more B.

动物跑的里程越多，就会有越多的B。

youdao