_0 u# [8 s( b# X* T N我也不懂啊,随便猜猜& h; R& r, r' V
1)母亲给胎儿的营养不是通过脐带传的吗?* ~5 G U* e9 Z) y1 R. ^6 @
2)据说,鲜血是红色的,因为带来大量氧气和营养成分,而废血是暗色的,月经的血就是暗色的. b3 p4 @8 Y a% g [
3)我记得月经的血就是冲走子宫粘膜什么的,所以是废血。 9 Z4 D' u" _4 a7 c H |4)否则你想啊,每次月经你留出去的都是鲜血,那多可怕啊?!
) r* q( l6 R" c, t; tToo hard to type in Chinese. ; q4 z! B8 {+ p7 K. B& LI hope you mean tubal sterilization or neuter.; z3 J: {. X8 H% E7 W# v
Why would anybody want woman's exhausted or clotted blood in his/her body?