They took us to court for infringing copyright laws.他们以侵犯版权法为由把我们告上法庭。If a teacher makes copies of software for students, he or she is infringing copyright.如果教师为学生复制软件，他就侵犯了版权。By publishing the book, they were guilty of infringing copyright.出版此书，他们犯了侵犯版权罪。