n. a requirement of etiquette or custom
n. a manner that strictly observes all forms and ceremonies
n. compliance with formal rules
n. 礼节, 拘谨, 正式手续
[化] 克式浓度
1. The meeting was just a formality before the official announcement.
会议只是正式公告前的一个程序。
2. Signing the contract is a necessary formality in this business deal.
在这笔交易中，签署合同是一个必要的手续。
3. He attended the party out of formality, not because he wanted to.
他出于礼节参加了聚会，并不是因为他想去。