名词
中文翻译：梯子
同义词：
['ladder', 'ladder-style lift', 'ladder-type lift']
例句：
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1. The engineer climbed the ladder to inspect the roof.
工程师爬梯子检查屋顶。
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2.The ladder was too short for her to reach the top of the tree.
这根梯子对她来说太短，够不到树顶。
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3. The ladder was used to help people climb up to the roof.
这根梯子被用来帮助人们爬上屋顶。