Alongflightcanaffectone’sbiologicalblock,sometimesforda...
問題詳情：Alongflightcanaffectone’sbiologicalblock,sometimesfordays.Airtravelerscangetverytiredanddevelopunpleasantfeelingswhentheyflygreatdistancesacrosstimezones.Thenaturalorderofthingscanbecomeunbal...