- 问题详情: WhydoAmericansstrugglewithwatchingtheirweight,whiletheFrench,whoconsumerichfood,continuetostaythin?NowaresearchbyCornellUniversitysuggestshowlifestyleanddecisionsabouteatingmayaffectarchersconcludedthattheFrenchtendtostopeatingwhentheyf...
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