- 问题详情:Astudyofmorethanfivemillionbooks,bothfictionandnon-fiction,hasfoundamarkeddeclineintheuseofemotionalwordsovertime.TheresearchersformtheUniversityofBristolusedGoogleNgramViewer,afacilityforfindingthefrequencyoftermsinscannedbooks,tosearchformo...
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