短語(yǔ)詞組短語(yǔ)arid region and semiarid region 干旱半干旱區(qū)arid and semiarid regions 干旱半干旱地區(qū)arid and semiarid area 干旱半干旱沙區(qū)arid and semiarid land 干旱和半干旱地 返回 arid and semiarid