| 单词 | 在子宫内 |
| 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 |
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