It can be extremely useful if you change the name of one of your files but allow users to still find it.

当您改变了一个文档名称时但仍然想让用户仍然能够用旧链接找到他，这个时候此功能将变得极其有用。

youdao

Users need to find out if a domain name is already registered or is still available.

用户需要查明某个域名是已经被注册过还是仍然可用。

《柯林斯英汉双解大词典》

After all, users still have to remember account Numbers and passwords as before, but must now provide a biometric too.

用户还是要象以前一样记住帐号与密码，现在要多一重生物识别验证。

youdao

The transparent photovoltaic film can be installed on most smartphones to generate power while still allowing users to operate their device.

CNN: STORY HIGHLIGHTS

As is clear from watching the video, if this turns out to be the case, many users will still rush out to buy it, but will likely feel a bit let down.

FORBES: Video Simulation: What If The iPhone 5 Is Just Super-Thin, But Not Taller?

Our undersanding is that users still have to opt out of all this stuff.

FORBES: Facebook's Changes Haven't Satisfied Privacy Critics