ㄐㄧㄢjiānㄉㄨㄢduān

  1. 頂點末端末梢 2.落後過時

  2. 比喻最先高級尖端科技」。

sharp pointed end, the tip, the cusp, tip-top, most advanced and sophisticated, highest peak, the best
(de)​ pointe, le plus avancé
Scheitelpunkt, Spitze (S)​