They can watch them on YouTube, or for those lacking an internet connection, the school provides a compact disc (CD) or a data storage device with the recordings.

他们可以在YouTube上观看，对于那些无法上网的学生，学校会提供一张存储着这些课程的CD光盘或数据存储设备。

Now, however, with the new technology, with MP3s, everything is digital and you don't even need to have a compact disc.

然而，现在有了新技术， 有了 MP3，一切都是数字化的， 你甚至不需要光盘。