For example, it's common to set an alias (' ll '), which expands to 'ls -l', for a long listing of a directory or list of files.

例如，设置别名(' ll ')是很普遍的，该别名展开为' ls - l '，用于获得目录或文件列表的长清单。

youdao

For example, a common alias is ll, which invokes the equivalent of ls -l (ll is often referred to as long listing).

例如，一个常用的别名是ll，它调用等效的ls - l (ll通常称为长清单(long listing))。

youdao

Ll: so, if I text L-O-L, my friend will know that I find something so funny it makes me want to laugh out loud?

没错。l - o - l在短信里，就代表laugh out loud，意思是看到了非常好笑的事情。

youdao

Whereas CS50 is not nearly as popular a library in the world, -lcs50 and so you'll have to explicitly say dash L CS50.

但是CS50库就没那么出名了，所以你必须在后面清清楚楚地添上。

哈佛公开课 - 计算机科学课程节选