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