Business English letter being a written style of conversation, its writing needs the guide of pragmatic principles.
商务英语信函，作为会话的一种书面形式，其写作自然离不开语用原则的指导。
Business English letter being a written style of conversation, its writing needs the guide of pragmatic principles.
商务英语信函，作为会话的一种书面形式，其写作自然离不开语用原则的指导。
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