1. 纪念
    To commemorate an important event or person means to remember them by means of a special action, ceremony, or specially created object.

    e.g. One room contained a gallery of paintings commemorating great moments in baseball history...
           有一个房间里陈列着很多纪念棒球史上伟大时刻的画作。
    e.g. The 200th anniversary of Mozart's death is being commemorated around the world with concerts featuring his work.
           世界各地将举办以莫扎特的作品为主题的音乐会，以纪念他逝世200周年。