哺乳动物繁殖的方法是生下幼儿。母亲们的肚子里有个地方叫子宫，这里就是幼

哺乳动物繁殖的方法是生下幼儿。母亲们的肚子里有个地方叫子宫，这里就是幼儿出生前住的地方。以下就是10种哺乳动物的宝宝住在母亲肚子里的平均天数。

Results (English) 1:

Mammal breeding is giving birth to children. Mother's belly is a place called the uterus, is where former children born to live here. The following is the average number of days 10 kinds of mammals live baby in the womb of.

Results (English) 2:

The way mammals reproduce is to give birth to young children. There is a place in the mothers' stomachs called the uterus, which is where the baby lived before birth. Here are the average number of days a baby of 10 mammals stays in a mother's belly.

Results (English) 3:

Mammals reproduce by giving birth to young children. Mothers have a place in their stomachs called the womb, which is where children live before they are born. Here's the average number of days a baby of 10 mammals lives in a mother's stomach.