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reference service
libr.	咨询服务
work.fl.	参考咨询服务
reference service The provision of aid by library staff trained to interpret library materials and library organizational structures to meet the informational, educational, cultural, recreational or research needs of the library's clients
environ.	资料服务 (为满足图书馆客户的信息、教育、文化、娱乐或研究的需求，由受过训练并能解释图书馆资源和图书馆的组织结构的图书管理人员所提供的帮助。)

reference service : 28 phrases in 11 subjects

Advertising	1
Aviation	1
Business	2
Computer networks	2
Earth sciences	1
Electronics	3
Geophysics	2
International trade	1
Librarianship	13
Shipbuilding	1
Space	1