音標發(fā)音英式音標 ['n?n?g(?)n]美式音標 ['nɑn?ɡɑn]國際音標 ['n?n?ɡ?n]英式發(fā)音 美式發(fā)音 基本解釋n.九邊形同根派生 nonagon相關詞英英字典劍橋英英字典 a flat shape with nine straight sides柯林斯英英字典 a polygon having nine sides (Also called enneagon)nonagon劍橋字典nonagon柯林斯字典專業(yè)釋義數(shù)學九角形九變形九邊形