n.

1. 仪式，典礼[C]
   The wedding ceremony was held on April fifteenth.

   婚礼在四月十五日举行。

2. 礼仪，礼节；（社交上的）形式[U]
3. 虚礼，客套[U]
   There need be no ceremony between us.

   我们之间不必客套。

n.

1. a formal religious or public occasion, typically celebrating a particular event or achievement.
   ▸an act or series of acts performed according to a traditional or prescribed form.
2. the ritual procedures observed at grand formal occasions:
   the new Queen was proclaimed with due ceremony.