a.

1. 礼节的；礼仪的；仪式的
   the President's ceremonial duties

   总统礼仪方面的职责

2. 正式的

n.

1. 礼节；礼俗[U]
2. 仪式，典礼[C]
   Tonight there will be a tribal ceremonial of great importance to mark the chief's birthday.

   今晚有一项重要的部族庆典，庆祝酋长的生日。

adj.

1. relating to or used for ceremonies.
2. (of a post or role) involving only nominal authority or power.

n.

1. the ritual procedures observed at grand formal occasions.
2. a ceremony.