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superfetation

n. [胚] 异期复孕；重孕

1、[胚]异期复孕

美国阿肯色州一名孕妇出现罕见的异期复孕（Superfetation）：她怀有女儿后两周半左右，再度怀下一名儿子。产科医生在六月替该名妇人照超声波时，发现这个百万分之一机会出现的情况。

2、重孕

... 超雌性 superfemales 重孕；重复受孕；重复受粉 superfetation; supereamtion 表面的；浅层的 superficial ...

生物学

n.fertilization of a second ovum after a pregnancy has begun; results in two fetuses of different ages in the uterus at the same time

"superfetation is normal in some animal species"

1.
N（名词） the presence in the uterus of two fetuses developing from ova fertilized at different times 异期复孕 [physiol]

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