短語(yǔ)詞組短語(yǔ)improved infrastructure land method 改進(jìn)基礎(chǔ)設(shè)施用地法improved d land 改良地desert land improved 撂荒地改良forest land improved 林地改良Improved Area of Saline -Alkaline Land 治堿面積 返回 improved land