Consultant service is an important part in the library and also is the necessary means to deepen the service for the readers.

参考咨询工作是图书馆工作的一个重要组成部分，也是深化读者服务的一种必要手段。

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In nineteen thirty-four, John Lomax became honorary consultant and curator of the Archive of American Folk Song at the Library of Congress.

VOA: special.2010.01.18

Bernard Green, who devised the system for the Library of Congress that was built a few years earlier than the New York Public Library, was hired as the engineering consultant for the New York stacks.

WSJ: New York Public Library | Undertaking Its Destruction | By Ada Louise Huxtable