business English letter商务英语信函
Business Review Letter希望得到商业审查信件
business planning letter商业计划信
international business reply letter国际商业回函
English business inquiry letter商务英语询问函
business English letter writing商务英语信函;商务英语信函写作;商务
Business s Letter商业信函
Operations business contact letter营运部公务联络函
The Business Letter商业书信;商务信函
It can be objectively said to some extent that vague language is one indicator of business letter types, i. e. the employment frequency of vague language can represent more or less business letter types.
模糊语言在一定程度上充当商务信函种类的指标，即模糊语言的使用频率或多或少地反映了商务信函的种类。
参考来源 - 商务书面文体中模糊语言的语用分析Business letter gets energetical development in the postal trade at present, but use the postal business letter process system not to meet the actual demands at present.
商函业务目前在邮政行业得到大力的发展，但目前使用邮政商函处理系统不能满足实际需要。
参考来源 - 邮政商函处理系统的研究与实现