milk 指的是雌性哺乳類用來哺育小孩而產出的白色營養液體，以下為Webster's Online Dictionary的英英解釋：
1. A white nutritious liquid secreted by mammals and used as food by human beings.
2. Produced by mammary glands of female mammals for feeding their young.
3. Any of several nutritive milklike liquids.
breast milk 母乳(n.)
"Breastfeeding" is the practice of a human mother feeding a baby (and sometimes a young toddler, see below) with milk produced from her mammary glands, usually directly from the nipples. Babies have a sucking instinct allowing them to extract the milk. (Alternatively a baby can be fed special industrial milk, "infant formula".)
譯典通, Webster's Online Dictionary, http://www.websters-online-dictionary.org/definition/breast+milk
· 1 decade ago