三、礼貌原则在商务英语信函中的应用的翻译：Third, the application of politeness principle in business letters 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Third, the politeness principle in business English letters in the application

Third, the application of politeness principle in business letters

Third, politeness principle in commercial English correspondence application

Principle 3, courtesy in English for Business Communication Applications in the

Third, the application of politeness principle in business letters