When a woman breast-feeds her baby, she feeds it with milk from her breasts, rather than from a bottle.
例句
Not all women have the choice whether or not to breast-feed their babies...不是所有的妇女都能选择是否用母乳哺育自己的孩子。Leading scientists claim breast-fed babies are intellectually brighter.主流科学家宣称母乳喂养的婴儿更聪明。