It's a double-line prompt, giving me more room to write commands, and it offers me the current user logged in, the hostname, and the current working directory (after the colon).

这是一个两行的提示符，可以给我更多的空间来输入命令。 提示符中有当前登录的用户名、主机名、冒号后还有当前工作路径。

youdao

Return air duct section. Single - or double-line ducts can be specified.

回风管道部分。可以指定单线管道或双线管道。

youdao

Supply or return duct section. Single - or double-line ducts can be specified.

送风或回风管道部分。可以指定单线管道或双线管道。

youdao

skittles So when you compile a program called A dot out, or skittles or wherever, and you double-click that program, or our in our command line environment, run it with dot slash skittles, that program is loaded Microsoft Word into memory just like Microsoft Word or whatever would be on your own computer.

当你编译一个程序a，out，或者,或其他的，你双击那个程序，或着在我们的命令环境中，采用，/skittles来运行它，那个程序被加载到,内存中，就像,或者你电脑上的其他程序。

哈佛公开课 - 计算机科学课程节选

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