知识贝壳
知识贝壳
所属栏目：汉英中兽医
Yang is regarded as the prerequisite for existence of yin.In the animal body,production of vital substances such as essence,blood and body fluids(yin)depends on the functional activities(yang),hence the saying“yin can not grow by itself.” ......（本文共 206 字 ） [阅读本文] >>