柯林斯词典stairwell /ˈstɛəˌwɛl/ (stairwells) 1. N-COUNT The stairwell is the part of a building that contains the staircase. 楼梯井 返回 stairwell剑桥词典a long , vertical passage through a building around which a set of stairs is built （建筑物内的）楼梯井 返回 stairwell