& r* R4 v p$ E& T* U
我也不懂啊,随便猜猜4 Q4 y6 q/ Y+ E5 b! @) n
1)母亲给胎儿的营养不是通过脐带传的吗?& `7 d& B6 [$ S& u7 p2 ]) j
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, T% I; c' P2 M; p @& Y
3)我记得月经的血就是冲走子宫粘膜什么的,所以是废血。' y9 f' f3 T& c
4)否则你想啊,每次月经你留出去的都是鲜血,那多可怕啊?!
, w% _6 `# Z* G( g# X/ V8 @6 k ) ]3 W4 e: h( c& K) ^2 bToo hard to type in Chinese.) _: z4 x: R/ M. S
I hope you mean tubal sterilization or neuter. & o9 Y/ y. Q4 R2 Y( ^4 h6 E- UWhy would anybody want woman's exhausted or clotted blood in his/her body?