physiology
n[U]
(a) scientific study of the normal functions of living things 生理学
reproductive physiology 生殖生理学.
(b) way in which the body of a particular living thing functions 生理机能
the physiology of the snake 蛇的生理机能.
I think it is important to understand the relations between parents and their children. They spend time, energy and money in bringing up children and providing them with what they need. Then, as with young birds, the time comes for the young to leave. As