Breastsleeping refers to the practice of sharing a bed with an infant as an aid to breastfeeding.

　　“母乳安眠”是指和婴儿睡一张床以帮助母乳喂养的行为。

　　这个词是由breastfeeding(母乳喂养)和co-sleeping(共眠)演化而来的，看了词源基本就能理解它的意思，非常好记。

　　For example:

　　In a peer-reviewed report published in Acta Paediatrica, McKenna argues that we should return to "breastsleeping," a co-sleeping model that mothers around the world have been practicing for thousands of years.

　　在学术期刊《儿科学报》上发表的一篇同行评议报告中麦肯纳提出，我们应该恢复“母乳安眠”，数千年来，世界各地的母亲都在用这种共眠模式。