母亲用乳汁喂养婴儿。

The mother feeds her baby with breast milk.

乳汁是婴儿最好的营养来源。

Breast milk is the best source of nutrition for infants.

有些母亲可能无法产生足够的乳汁。

Some mothers may not be able to produce enough breast milk.

乳腺是哺乳动物用来分泌乳汁的器官。

The mammary gland is an organ in mammals that secretes milk.

医生建议母亲至少喂养六个月的乳汁。

Doctors recommend feeding breast milk for at least six months.

在哺乳期，母亲会产生乳汁喂养她的婴儿。

During lactation, the mother produces milk to feed her baby.

乳汁中含有抗体，有助于保护婴儿免受感染。

Breast milk contains antibodies that help protect the baby from infections.

婴儿吮吸母亲的乳汁。

A baby sucks milk from his mother's breast.

催产素产生贮存的乳汁；

Oxytocin causes the expression of stored milk;

乳汁也含病毒，有传染性。

Milk may contain the virus, there is infectious.