Babies are born searching for the nipple to feed from .
觅食反射宝宝一出生就会寻找乳头汲奶。
Fluid or bloody discharge from your nipple
乳头出现血色或其他分泌物
Small ducts conduct the milk to a reservoir just beneath your nipple .
小乳管会把乳汁输送到乳头下方的储存所。
That small lump with tenderness beneath the nipple is a normal part of puberty , and lots of guys experience it .
乳头下面有压下去有点痛是青春期中很正常的一种现象，许多男孩都经历过。
They 'd like to bring these nanoparticles through openings in the nipple and use a magnetic field to move them along the ducts where they would bind to cancer cells .
