etiquette
[名词]
a set of conventional rules or formal manners, usually in the form of ethical code

礼仪, 礼节
Ex: etiquette at the meeting was impeccable .
the ability to understand and respect the traditions, values, regular activities, etc. of the people from a different culture
offensive
[形容词]
causing someone to feel deeply hurt, upset, or angry due to being insulting, disrespectful, or inappropriate

冒犯的, 攻击性的

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