- polite principle
- politeness principle
- 礼貌: courtesy; politeness; manner ...
- 原则: principle
- 普遍礼貌原则: universals of politeness
- 论英文商务信函中的礼貌原则: on the politeness principle for writing business letters in english
- 商务谈判英语中的礼貌原则: principles of good manners in english business negotiations
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