northwestn.西北；西北方adj.西北的；在西北的；来自西北的adv.向西北northwestem Guizhou黔西北地区northwestern region西北地区Northwest Xiangshan西北香山Northwest arid zone西北干旱区Northwestern Africa西北非northwestern Yunnan滇西北Northwest sandy area西北风沙区northwestward faults北西向断裂Northwest Demography西北人口Northwestern Pacific西北太平洋