From saving files, to using a mouse or fixing problems, the operating system covers the basics.

操作系统涵盖了保存文件，移动鼠标，调试程序等基本运作。

To " stream" on the Internet means that you're not saving the file onto your computer, you're just watching or listening to the file from the website but you're not downloading it, necessarily.

在 Internet 上“流式传输” 意味着您没有将文件保存到您的计算机上，您只是从网站上观看或收听文件， 而不是下载它， 这是必然的。