名词
中文翻译：阶梯
同义词：
['staircase', 'step', 'ramp', 'ladder']
例句：
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1. The elevator is located at the top of the stairs.
电梯位于楼梯的顶部。
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2. She climbed up the ladder to reach the top of the tree.
她爬上梯子到达了树顶。
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3. The construction crew used a ladder to access the roof.
建筑工人使用梯子来到达屋顶。