出36:22 榫sǔn 損木制物相界處的(粵音) seon2 筍( 每塊有兩榫相對One board had two tenons ... in prime vertical 卯酉圈曲率半徑榫(ㄙㄨㄣˇ) 注音讀音:ㄙㄨㄣˇ.
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