Anyone who wants copyrightprotection for a publication in the US must send two copies to the library.
任何想要在美国获得出版物版权保护的人必须向图书馆提交两份副本。
2
Classic copyrightprotection laws provide that even if you scribble on paper, you will automatically own the copyright of the information on that paper.
经典的版权保护法规定，即便你是在一张纸上乱涂乱画，你也自动拥有了对这张纸上信息的版权。
3
The lack of copyrightprotection means that almost all revenue must come from the box office rather than from DVDs or television.