If you have some of the older, copy-protected iTunes songs in your stash, they won't play.
如果你有一些旧的，有版权保护的iTunes songs歌曲，它们将无法播放。
2
Transfer copy-protected eBooks from your personal computer to other computers or devices. Organize your eBooks into a custom library and annotate pages.
传输版权保护电子书从您的个人电脑到其他计算机或设备。
3
In the 1950s Anthony Allison, a British biochemist, observed that Africans who carry a single copy of the genetic mutation that causes sickle-cell anaemia are protected against malaria.