楼梯竖井；楼梯井
先理解核心含义，再看它在真实句子里的用法。
楼梯竖井；楼梯井；楼梯竖井；楼梯井
a vertical shaft or well containing a staircase
The fire escape led into a dark stair shaft.
消防通道通向一个黑暗的楼梯竖井。
楼梯竖井；楼梯井
a vertical shaft or well containing a staircase
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Dictionary facts from AI_SUPPLEMENT.