de rigueur
01
必需的
required by etiquette or fashion norms, indicating it's currently popular or expected to wear
例子
Wearing a black tie to the event is de rigueur.
在活动中佩戴黑色领带是 de rigueur。
For formal occasions, a tailored suit is de rigueur for gentlemen.
在正式场合，量身定制的西装对绅士来说是de rigueur。
