After a few words of courtesy, they got down to business.

双方客气了一番，就开始谈正事。

《新英汉大辞典》

Not only is it standard business practice, it's also common courtesy.

这不仅是标准的商务惯例，也是一般的礼貌。

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Qualifying words and phrases are only efficient when used to establish courtesy upon initiating communication with someone you'd like to have a business or personal relationship with.

当你要与某人进行商业合作或者建立人际关系时初次交流为表现礼貌而使用正式词汇和短语才有效。

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Just as Giuliani contemplates that important decision comes a reminder, courtesy of the New York tabloids, that political and business relationships can sometimes collide.

FORBES: As a businessman, he's been mixing with a sketchier crowd.

To the contrary, if the rental activity does not rise to the level of a trade or business, the fact that it is no longer treated as passive courtesy of the real estate professional rules will not change the fact that the rental income is considered net investment income.

FORBES: Ten Things We Learned From The New Obamacare Investment Tax Regulations