- 问题详情:Whenpeopleloselegsafteraccidentsorillnesses,emergencycareandartificiallimbs(假肢)oftenallowthemtowalkagain.Newts(蝾螈)inthesamesituation,ontheotherhand,cangrowlimbsbackontheirown!Scientistshaveknownforalongtimethatcertainanimalscanre–growlimbs,b...
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