网络释义专业释义英英释义
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。
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superfetation [ ,sju:pəfi:teiʃən ]
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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"
以上来源于: WordNet
柯林斯英汉双解大词典
superfetation /ˌsuːpəfiːˈteɪʃən/
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1.
N the presence in the uterus of two fetuses developing from ova fertilized at different times 异期复孕 [physiol]
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