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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.
乳汁储存在乳腺小叶中。当后叶催产素给乳腺小叶中的微小肌肉发出信号使其收缩时，乳汁被挤入乳管。这个过程叫做乳汁释放反射。尽管婴儿天生有吮吸反射，但是也要学习如何吮吸。

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.
在哺乳过程中，使婴儿保持合适的嘴巴-乳头放置是很重要的。这样可以确保婴儿吃到足够合适的乳量，这样的哺乳过程就比较成功。
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.
合适的扣紧位置是指乳头被放置到婴儿嘴巴的后部，几乎接近硬腭和软腭交界处。如果婴儿只吮到了乳头的尖部，或者嘴巴没有含到足够的乳房组织，那么就会导致母亲乳头疼痛，甚至乳头破裂。

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栏目简介：

在科技飞速发展的21世纪，医学的学习和研究不能与国际社会脱离，以英语为媒介的专业交流越来越普遍。通过本栏目的学习让大家拜托对医学英语的畏惧感，开口自信地交流沟通吧！

本期视频：

由于本期和上期内容的限制，只能从原视频中切出30秒的部分不被屏蔽，大家见谅啊~这30s包括上一期和这一期的一点点内容，希望对大家的学习有所帮助。