我后来才知道这是个妇产科的技巧，通过吓唬双胞胎妈妈要进行剖腹产来让她使劲生出第二个宝宝，但Gold 医生坚持说他并没有玩这个把戏。

I later learned that it's an old obstetric trick to threaten the mother oftwins with a C-section in order to get her to push out the second baby, but Dr. Gold insisted he wasn't playing that game.

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但是他说研究小组在一项针对双胞胎的单项调查中发现，手指长度大部分由遗传决定，这也能解释为什么喜爱运动的父母通常生下运动宝宝。

But he said the unit had found in a separate study of twins that finger length was largely inherited, possibly explaining why sporting parents often have sporting children.

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