man page ls 問題~

[df27273839]

List information about the FILEs (the current directory by default).
Sort entries alphabetically if none of -cftuvSUX nor --sort.

Mandatory arguments to long options are mandatory for short options
too.

其中 if none of -cftuvSUX nor --sort.
Mandatory arguments to long options are mandatory for short options too. 這兩句看不太懂@@

我有查字典Mandatory arguments 是指令參數嘛？long options很長的選項==？
抱歉幫我翻譯一下= =；

感謝~