The impolite act violates the basic rules of etiquette.

这种不礼貌的行为违反了基本的礼仪规则。

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What is basic business dress etiquette? In order to maintain a professional and competitive edge we should understand the essentials of dress etiquette in a business environment.

商海衣着的根本礼仪是什么？为了保持专业和竞争方面的优势，我们应该熟悉商场中的衣着礼仪的要义。

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It is enough to make a butler lose his composure. For Downton Abbey has been accused of basic etiquette errors - by the lady of the house.

《唐顿庄园》因在最基本礼仪方面犯错而受到批评，这件事足以让男管家卡森先生无法镇定吧！而批评者正是取景地的真正女主人。

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Before making the switch, PricewaterhouseCoopers encouraged its employees to follow some basic rules of etiquette, reminding them, for instance, not to leave uneaten food in someone else's office and urging them to replace office supplies they used.

WSJ: Warming Up to the Officeless Office