哺乳期的长度因物种而异。

The length of the suckling period varies by species.

哺乳期的婴儿需要频繁喂奶。

Babies in the suckling period need frequent feeding.

哺乳期的母亲应避免饮酒和吸烟。

Mothers in the suckling period should avoid drinking alcohol and smoking.

在哺乳期结束后，婴儿开始吃固体食物。

After the suckling period ends, babies start eating solid food.

在哺乳期，母亲需要特别注意营养。

During the suckling period, mothers need to pay special attention to nutrition.

母猫的哺乳期大约持续八周。

The mother cat's lactation period lasts about eight weeks.

她的乳房在哺乳期变得更大了。

Her breast became larger during breastfeeding.

催乳素在哺乳期对母乳的生产非常重要。

Prolactin is crucial for milk production during breastfeeding.

兽医解释了哺乳期对新生小狗的重要性。

The vet explained the importance of lactation for the newborn puppies.

在哺乳期，母亲和婴儿的营养非常重要。

Proper nutrition is crucial during lactation for both mother and baby.