N-UNCOUNT (尤指特定阶层的)礼仪,礼节;(尤指特定行业的)行为规范,规矩Etiquette is a set of customs and rules for polite behaviour, especially among a particular class of people or in a particular profession. (尤指特定阶层的)礼仪,礼节;(尤指特定行业的)行为规范,规矩
This was such a great breach of etiquette, he hardly knew what to do.
这是严重失礼的行为,他几乎手足无措。
...the rules of diplomatic etiquette.
外交礼节的规则
SYN good or proper behaviour, manners, rules, code