northern slope 北坡（美國阿拉斯加州北冰洋之間）northern shoveler [生物學(xué)]琵嘴鴨northern scenery 北國風(fēng)光northern right-whale dolphin northern qinghai-tibet plateau [農(nóng)業(yè)科學(xué)]藏北高原northern province northern premier league northern pike northern oriole northern nanny [地球科學(xué)]北雹風(fēng)northern middle latitude [環(huán)境科學(xué)技術(shù)]北半球中緯度northern link northern line northern limit line northern lights northern light 北極光northern leopard frog northern league northern latitude n. [地理] 北緯northern karelia province