Professor Spector decided to test the claims because he had access to a large database of twins, on whom he has been conducting research for 20 years.
Spector教授决定对以往的结果进行验证，因为他在这方面开展研究已达二十年之久他获得了大量有关双生子的数据。
Professor Spector decided to test the claims because he had access to a large database of twins, on whom he has been conducting research for 20 years.
Spector教授决定对以往的结果进行验证，因为他在这方面开展研究已达二十年之久他获得了大量有关双生子的数据。
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