名词
中文翻译：台阶
同义词：
['step', 'staircase']
例句：
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1.The old man climbed the stairs to reach his office.
老人爬楼梯去他的办公室。
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2.She carefully stepped onto the first step of the ladder.
她小心翼翼地踏上梯子的第一级。
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3.The children were climbing the stairs to their classroom.
孩子们正在爬上楼梯去他们的教室。