ㄩㄢˊyuánˇㄅㄧˇ

  1. 國人(Reynolds)​發明形狀自來水筆筆管中裝油墨書寫轉動油墨間隙滲出

ballpoint pen, also written 圓珠筆
stylo à bille
Kugelschreiber (S)​, Kuli (S)​