但是，没有一个父母被告知他们的孩子是双胞胎或三胞胎中的一个，或者被告知这项研究是有关先天和后天对人的影响。
No one, however, was told that the child was a twin or triplet, or that the study involved the influence of nature versus nurture.
但是，没有一个父母被告知他们的孩子是双胞胎或三胞胎中的一个，或者被告知这项研究是有关先天和后天对人的影响。
No one, however, was told that the child was a twin or triplet, or that the study involved the influence of nature versus nurture.
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