可是那些只有一个或根本没有同胞兄弟姐妹与之竞争财产的人会更容易达成目的。

But that point is reached sooner by those who have only one sibling rival, or none at all.

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从遗传基因上来将，它们既是它们自己也是同胞兄弟姐妹。

They are, genetically, both themselves and their sibling at the same time.

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当这些同胞兄弟姐妹们被带到其各自的家庭中，他们的父母被告知他们的孩子是正在进行的研究中的一部分，所以需要定期的采访和评测。

When the siblings were placed with their respective families, the parents were told that the child was part of an ongoing research study that would require regular interviews and evaluations.

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