mammegen

例句：

1. 1. The mammalian species is known for its ability to survive in extreme environments.
   哺乳动物物种以其在极端环境中生存的能力而闻名。
2. 2.The mother wolf nursed her pups until they were strong enough to fend for themselves.
   母狼喂养她的幼崽直到它们足够强壮，能够自己生存。
3. 3.The farmer's wife is the one who produces the food that feeds the family.
   农民的妻子是生产食物的人，这些食物养活了整个家庭。