According to theDailyMail, the researchers also surveyed the subjects to determine who had dark personality traits.
根据《每日邮报》称,研究员们也调查了这些主体,从而决定谁有黑暗的人格特点。
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According to theDailyMail, the 31-year-old could spend over six months and uses up to ten thousand screws to create just one of his three-dimensional portraits!