- 问题详情:Expressionsonthefacecarrymeanings,whichdependsonsituationsandrelationships.Forinstance,inAmericanculturethesmileistypicallyanexpressionof(41) .Yetithasotherfunctions.Asmilemay(42) love,politeness,or(43) truefeeling.Itisalsoasourceofconfusion(混乱)ac...
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