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On the inside are the rungs or the struts that hold the ladder together.
梯子内侧是梯阶,也可以说是梯阶把梯子连接在一起
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- 来自原声例句
On the inside are the rungs or the struts that hold the ladder together.
梯子内侧是梯阶,也可以说是梯阶把梯子连接在一起
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