1 sentence for 开通 (kāi​tōng — to clear)

1. 北京是中国第一个开通地铁的城市。

   běi​jīng shì zhōng​guó dì yī​ge kāi​tōng dì​tiě de chéng​shì.

   Beijing is the first city in China to open a subway.

   Source: CCMatrix