The distinction between "library reference" and "language references" is always fuzzy to me when I go to look something up.

当我去查阅某些东西时，“库引用”和“语言引用”之间的区别对我而言总是模糊的。

youdao

Formal language is the kind of language you find in textbooks, reference books and in business letters.

正式语体是你在教科书、参考书和商务信函中看到的用语。

youdao

The library contains a large number of foreign language reference books.

图书馆有大量的外文参考书。

《新英汉大辞典》

Bethell has also been charged with using abusive language aggravated by reference to nationality and or race.

BBC: Evra charged over Bridge 'brawl'

How would it be possible, considering that the Obama administration has scrubbed its official language clean of any unflattering reference whatsoever to Islam and will brook no criticism of it?

CENTERFORSECURITYPOLICY: Mr. X and the New Cold War

Written in the local Chichewa language, the words were a reference to the vendors carrying out the attacks, organizers said.

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