哺乳动物怀孕后，肚子都会变得胀鼓鼓，而且乳头也会变大。这是为了让即将出

哺乳动物怀孕后，肚子都会变得胀鼓鼓，而且乳头也会变大。这是为了让即将出生的幼儿，有奶水可以吸食。

Results (English) 1:

After the mammalian pregnancy, it will become plump belly and nipples also become large. This is to allow children to be born with milk can be smoked.

Results (English) 2:

When a mammal becomes pregnant, its stomach becomes bulging and the nipples become larger. This is in order to let the soon-to-be-born toddler, there is milk can be smoked.

Results (English) 3:

When a mammal is pregnant, its stomach bulges and its nipples grow. This is to let the baby who is about to be born have milk to drink.