名词
中文翻译：楼梯
同义词：
['staircase', 'back stairway']
例句：
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1.The old building has many back stairs that lead to the basement.
这座老建筑有很多通往地下室的后楼梯。
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2. She climbed up the back stairs to reach her room.
她爬上了后楼梯，到达了她的房间。
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3. The old house had a back stairway that led to a secret room.
这所旧房子有一个通向秘密房间的后楼梯。