downstairs/͵daUnˋstɛrz; ˌdaʊnˈsteəz◄/adj , adv on or towards a lower level of a building, especially a house [ upstairs ] 在楼下﹔往楼下: Go downstairs and answer the door. 下楼去开门。There was a sound from downstairs . 从楼下传来了声响。He was downstairs. 他在楼下。A light was on in one of the downstairs rooms . 楼下一个房间的灯亮着。