Business English letter writing module as a practical and useful English writing course has been taught at the author's university for a decade or so.
实用公函写作课程作为作者所在大学的一门选修课程，面向非英语专业的研究生已开设了十年左右。
Business English letter writing module as a practical and useful English writing course has been taught at the author's university for a decade or so.
实用公函写作课程作为作者所在大学的一门选修课程，面向非英语专业的研究生已开设了十年左右。
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