nicety|niceties

外交礼仪要求注重每一个细节。

Diplomatic etiquette requires attention to every ___nicety.

我们略过客套话，直接讨论实质性问题。

Let's skip the ___niceties and focus on the main issue.

她花时间学习商务会议中的礼仪细节。

She took time to learn the ___niceties of business meeting etiquette.