| 释义 |
〔superfetate〕To conceive when a fetus is already present in the uterus.异期复孕:胎儿已在子宫内时发生的怀胎〔superfetation〕Formation or development of a second fetus when one is already present in the uterus, occurring normally in some animal species.异期复孕:一个胎儿已在子宫内时另一个胎儿的形成或生长,在一些动物种类中经常发生〔decidua〕A mucous membrane lining the uterus, modified during pregnancy and shed at parturition or during menstruation.蜕膜:一种粘膜,附在子宫内壁上,怀孕期间减少,分娩时或月经期间脱落 |