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The milk is stored in the lobules until the hormone oxytocin signals the tiny muscles in the lobules to contract and push the milk through the ducts. This process is called let-down reflex or the milk-ejection reflex.Though babies are born with a natural sucking reflex, they must still learn to breastfeed.
乳汁儲存在乳腺小葉中。當后葉催產素給乳腺小葉中的微小肌肉發出信號使其收縮時，乳汁被擠入乳管。這個過程叫做乳汁釋放反射。盡管嬰兒天生有吮吸反射，但是也要學習如何吮吸。
During breastfeeding, it is important that the infant maintain appropriate mouth-nipple placement; this assures that the baby is receiving a proper amount of milk and that breastfeeding experience will be successful.
在哺乳過程中，使嬰兒保持合適的嘴巴-乳頭放置是很重要的。這樣可以確保嬰兒吃到足夠合適的乳量，這樣的哺乳過程就比較成功。
The appropriate latch-on position is for the nipple to be placed far in the back of the baby's mouth, almost to where the hard palate meets the soft palate. If a baby sucks only on the tip of the nipple, or does not have enough breast tissue in the mouth, it can cause the mother to have sore or cracked nipples.
合適的扣緊位置是指乳頭被放置到嬰兒嘴巴的后部，幾乎接近硬腭和軟腭交界處。如果嬰兒只吮到了乳頭的尖部，或者嘴巴沒有含到足夠的乳房組織，那么就會導致母親乳頭疼痛，甚至乳頭破裂。
