一旦设置好了，该参数就无法进行修改或重新设置。

Once set, this parameter cannot be changed or reset.

youdao

把多个密码同时更改或重新设置为词典单词甚至用户名很容易，但这不是良好的密码策略。

It is easy when changing or resetting several passwords at once to use dictionary words or even the users name, but, this is not good password policy.

youdao

文件块缓存-当一个文件被打开时，内核与远程服务器一起检查是否取或重新设置缓冲的属性。

File-blocks cache - when a file is opened, the kernel checks with the remote server whether to fetch or revalidate the cached attributes.

youdao