Read Edit View history 拱心石 gǒngxīnshí keystone Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 拱心石 gǒngxīnshí keystone central stone at the summit of an arch that locks the whole structure together Edit Delete References Add reference classifier 拱心石/拱心石 → 块/塊 Edit Delete
拱心石 gǒngxīnshí keystone central stone at the summit of an arch that locks the whole structure together Edit Delete