None is specified in the figure.

这个图中没有指定密码。

youdao

If one of the required values is None, this means that one of the command line option was not specified.

如果必需的值之一是None，就意味着没有指定一个命令行选项。

youdao

Root is used when none is specified (repeat and root are the same, and so when a repeat tag is open, root is used for this type of error checking).

Root 在没有进行任何指定时使用（repeat 和 root 一样，所以当打开 repeat 标记时，root 用于此类错误检查）。

youdao