名词短语
中文翻译：台阶支撑物
同义词：
['railing', 'handrail', 'balustrade']
例句：
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1. The old building has many steps leading up to the second floor.
这座老建筑有多个台阶通向二楼。
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2. The children were climbing the stairs with their parents.
孩子们和他们的父母一起爬楼梯。
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3. The new elevator is installed on the balustrade at the entrance of the museum.
博物馆入口的扶栏上安装了新电梯。