Identical twins are genetic duplicates, while fraternal twins share only about half their genes and are no more genetically alike than ordinary siblings are.

同卵双胞胎的基因完全一样；异卵双胞胎的基因只有一半完全一样；异卵双胞胎的基因恐怕并不比普通兄弟姐妹之间的基因更加相似。

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This isn't surprising, since the Soundex algorithm was designed to group names that sound alike, not just those that sound identical.

这并不奇怪，因为soundex算法的设计，就是为了把发音相似的名字组合在一起，而不是严格地按照发音相同组合。

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If identical twins are more alike than fraternal twins, therefore, we conclude that the trait under consideration is to some degree inherited.

如果同卵双胞胎在某个特定的性格特征上较异卵双胞胎表现出更大的相似性。那么我们就可以确定，该性格特征或多或少受到了遗传的影响。

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You always hear about how alike identical twins are, so I wanted to know how Mike was different from his brother.

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