The second chapter is about the challenges of fair use of copyright in the digital environment.

第二章阐述了数字环境下著作权合理使用制度面临的挑战。

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In cyberspace there exist some new forms of fair use of copyright, a significant one of which is "reasonable limitation of technological measures".

在网络空间，著作权合理使用也存在新的形式，“技术措施合理限制制度”是其中一个十分重要的制度。

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More recently, a revision of the U.S. copyright Act in 1976 extended copyright protection to unpublished works and codified what constitutes "fair use."

更近一点，1976年美国对Copyright Act的修订，将版权扩展到保护未出版的作品，并编写了“正当使用”的条款。

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U.S. District Judge Denise Cote rejected Meltwater's claims that its use of Web stories drawn from a scan of 162, 000 news websites from more than 190 countries was a fair use of copyright-protected material.

WSJ: Judge: Aggregator of AP news can't have free ride

Google is also promising that it will stop copying content from other websites to use in its summaries, even though the company had insisted the practice was legal under the fair-use provisions of US copyright law.

BBC: Google makes concessions to avoid legal action in US

Cyberlibertarians would do the opposite and infinitely expand the concept of fair use, or limited exemption to copyright protection.

FORBES: The YouTube Solution