你一定是把著名体操运动员李小双和他的孪生哥哥李大双搞混了。
You must have confused famous gymnast Li Xiaoshuang with Li Dashuang, his twin brother.
有关孪生子的研究预告，本病单卵孪生的同病率比双卵孪生一般高4 ~ 6倍，寄养子也是如此。
Notice to twin studies on the disease with the disease monozygotic twins than dizygotic twins rate of 4 to 6 times the height of the foster child as well.
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