基本解釋[土木建筑工程]落后山區(qū)英漢例句雙語例句Baojing County which situated at the outlying mountainous area in Xiangxi, has a backward economical development.保靖縣屬湘西土家族苗族自治州，地處邊遠山區(qū)，經濟發(fā)展落后，是國家級貧困縣。a backward mountainous area更多例句專業(yè)釋義土木建筑工程落后山區(qū)