这个词是什么意思？
Two offspring from the same PREGNANCY. They are from two OVA, fertilized at about the same time by two SPERMATOZOA. Such twins are genetically distinct and can be of different sexes.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D014429 · MeSH 2026。
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