短語詞組短語Semiarid saline regions 半干旱鹽漬化地區(qū)arid and semiarid regions 干旱半干旱地區(qū)semiarid and subhumid regions 半干旱和半濕潤地區(qū)Northwest semiarid regions 西北半干旱區(qū)ecological environment of semiarid regions 半干旱地區(qū)生態(tài)環(huán)境semiarid loess hilly -gully regions 半干旱黃土丘陵溝壑區(qū) 返回 semiarid regions