有些年轻姑娘,乳头很小,而且平日总凹陷进去,只有在遇冷或洗澡时,乳头才有所显现。她们感到忧虑,怕将来因此而导致婚姻的不幸,或者影响孩子吃奶。乳头是乳房结构的一个部分。乳房中有许多乳腺小泡,各乳腺小泡有一乳腺管开口于乳头。产后妇女乳腺小泡中分泌的乳汁可以经过乳腺管到乳头滴出。一般人的乳头是凸起在外的。未婚 Some young girls, nipples are small, and the total depression into the weekdays, only in the case of cold or bath, the nipple was only apparent. They are worried for fear of future misfortune in marriage or child abuse. Nipple is a part of the structure of the breast. There are many mammary vesicles in the breast, and each mammary vesicle has a breast duct opening in the nipple. Postpartum women breast milk secretion in the milk can go through the duct to the nipple drip. Most people’s nipples are raised outside. unmarried