拱心石 gǒngxīnshí keystone Definitions Defs Origin Strokes Stroke Words Sentences Sents 拱心石 gǒngxīnshí keystone central stone at the summit of an arch that locks the whole structure together Cross-References Classifier 块 kuài
拱心石 gǒngxīnshí keystone central stone at the summit of an arch that locks the whole structure together Cross-References Classifier 块 kuài
