电脑上的copyright是什么意思

就是版权的意思
举例子：
Who owns the copyright on this song?
谁拥有这首歌曲的版权？

Copyright expires seventy years after the death of the author.
版权在作者去世七十年后期满无效。

They were sued for breach/infringement of copyright. 他们被指控侵犯版权。