名词
中文翻译：平底栏杆
同义词：
['flat surface', 'flat edge', 'flat bottom']
例句：
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1.The flat-bottomed rails on the floor are designed to prevent slipping.
地板上的平底栏杆设计用来防止滑倒。
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2.The flat-bottomed rails were installed to support the weight of the new roof.
安装平底栏杆是为了支撑新屋顶的重量。
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3.The flat-bottomed rails made it easier for people to move around in the room.
平底栏杆使得人们在房间里移动时更加方便。