stairwells
[建]楼梯井（stairwell 的复数）
例句
Drug users were jacking up in the stairwells.
当时瘾君子正在楼梯井注射毒品。
《牛津词典》
Each building had fireproof drywalls to protect the stairwells.
每座大楼都有防火干板墙保护其楼梯井。
《柯林斯英汉双解大词典》
Floor evacuations should be made by the stairwells.
应通过楼梯井进行楼层疏散。
