Unlike free public libraries, which are open to everyone, private libraries can be used only by authorized readers.

与对所有人开放的免费公共图书馆不同，私人图书馆只能由被授权的读者使用。

youdao

The largest and most important private libraries are operated by colleges and universities and are used by students, faculty members, and occasionally by visiting scholars.

规模最大和最重要的私人图书馆由学院和大学运营，供学生、教师使用，偶尔也有访问学者使用。

youdao

In addition to public and private libraries there were many specialized collections in ancient Greece.

除了公共图书馆和私人图书馆，古希腊还有相当数量的专门图书馆。

youdao

Other undiscovered letters understood to be held in libraries and private collections around the world are being searched for.

BBC: Alfred Russel Wallace's 19th Century letters go online

As well as TransMilenio, he built more than 200km of cycle paths, a network of public libraries and got private schools to run new public schools in the poorer south of the city.

ECONOMIST: Can Enrique Pe?alosa restore a tarnished municipal model?

The report proposes running libraries in partnership with the private sector, charities or other councils and extending their reach by integrating them with community facilities such as churches and by providing health centres and police surgeries on site.

BBC: Plan to create libraries of the future