| 释义 |
〔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〔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 |