基本解释[土木建築工程]落後山區英汉例句雙語例句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，地処邊遠山區，經濟發展落後，是國家級貧睏縣。a backward mountainous area更多例句专业释义土木建築工程落後山區