名词
中文翻译：Unknown
同义词：
['inner ladder', 'inner side of the ladder']
例句：
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1.The engineer carefully inspected the inside of the ladder before repairing it.
工程师仔细检查了梯子的内部，然后才修理它。
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2. The children were playing on the inside of the ladder, unaware of the danger.
孩子们在梯子的内侧玩耍，没有意识到危险。
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3. The construction workers had to climb inside the ladder to reach the roof.
建筑工人不得不爬进梯子到达屋顶。