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https://learn.plus/2016/11/10/%e5%ad%b8%e7%bf%92%e8%a3%bd%e4%bd%9c%e6%a9%9f%e6%a2%b0%e4%ba%ba%e6%98%af%e5%b8%b8%e7%90%86%e7%9a%84%e5%97%8e/
學習製作機械人是常理的嗎