cer·e·mo·ni·ous
adjective/ˌserəˈməʊniəs/
/ˌserəˈməʊniəs/
(formal)- behaving or performed in an extremely formal way
讲究礼仪的 - She unveiled the picture with a ceremonious gesture.
她以一种隆重的姿态揭开了照片的面纱。
Word Originmid 16th cent.: from French cérémonieux or late Latin caerimoniosus, from Latin caerimonia ‘religious worship’, (plural) ‘ritual observances’. - She unveiled the picture with a ceremonious gesture.