A professor of psychology at the University of California, Davis; Emmons has long been interested in the role gratitude plays in physical and emotional well-being.
A professor of psychology 主è¯at the University of Californiaå®è¯ï¼ä»è¯çè¯ï¼, åä½è¯Davids;Emmons has long beenè¿ç³»å¨è¯ interested 表è¯in the role gratitude plays in physical and emotional well-being.ç¶è¯
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