andtheirslowmoveButm的精選

問題詳情：   Wehavetalkedaboutsnails(蝸牛)andtheirslowmove.Butmuchofthetimenailsdon’tmoveatall.Theyareintheirshells---sleeping.  Hotsunwilldryoutasnail’sbody.Soattheleastsignofhotsun,asnaildrawsi...