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双胞胎孕期多少周
更新时间: 2020-11-05 00:00:00  

首先双胞胎通常怀孕三十七、三十八周左右,比正常的四十周怀孕早一点。

双胞胎,指胎生动物一次怀胎生下两个个体的情况。双胞胎一般可分为同卵双胞胎和异卵双胞胎两类。在人类社会,全世界双胞胎平均出生率为1∶89。

关键词: 双胞胎 孕期 多少

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