stairways的例句（stairways在句子中的用法）

• All doors of the Centre's exits stairways are alarmed. 通往楼梯的防火门本中心已安装警铃.
• Conference in corridors, on stairways or walkways must be avoided. 应避免在走廊 、 楼梯、人行道上开会交谈.
• The fire spread quickly via stairways to engulf the entire building. 大火经楼梯迅速蔓延至整座大厦.