The researchers used the Center for Epidemiological Studies Depression Index - a standard set of questions psychologists use to measure happiness - to analyze the cheeriness of the study participants.
研究者利用了传染病研究的核心对象-抑郁指数-这个在心理学上用来衡量幸福指数的因素来分析参与者的快乐程度。
The researchers used the Center for Epidemiological Studies Depression Index - a standard set of questions psychologists use to measure happiness - to analyze the cheeriness of the study participants.
研究者利用了传染病研究的核心对象-抑郁指数-这个在心理学上用来衡量幸福指数的因素来分析参与者的快乐程度。
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