31.句子加and,but,for,or,so,yet1.Youneedtotakeplentyofwaterandsnacks.Youmightgetsick.
2.Rangersrecommendfourlitersofwaterforanall-dayhike.Hikersneedtrailbarsorotherhealthysnacks.
3.FromtheSouthRim,youcanhikedownBrightAngelTrail.FromtheSouthRim,youcantaketheSouthKaibabTrail.
4.DrinkingwaterisavailablealongtheBrightAngelTrail.There'snowaterontheSouthKaibab.
5.Eitherway,hikingintheGrandCanyonisdifficult.Youneedtobeprepared.
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