【答案】Itmeanslanguageisresourcefulbecauseofitsdualityanditsrecursiveness.Itreferstothepropertythatlanguageenableslanguageuserstoproduceorunderstandanindefinitenumberofsentencesincludingnovelsentencesbyuseofafinitesetofrules.Forexample,Icouldmakeasentencelike“Themanwhoiswaitingfortheladywhoistalkingtotheboywhoisplaying...