謝謝, 那架子怎能固定在垂直外牆呐? 僅靠支架那2腳的摩擦力?
所有跟帖:
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yes. that's why the lower ends of ladder need be
-borisg-
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11/30/2023 postreply
07:10:57
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哦.學習了.謝謝.
-pickshell-
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11/30/2023 postreply
07:51:11