Do not reboot unless I say!

不要重启，除非我告诉你！

youdao

I won't tell them—not unless you say I can.

我绝不告诉他们—除非你允许。

《牛津词典》

youdao

But sometimes I would say, the government does not take security seriously enough unless it happens.

VOA: standard.2009.07.30

Today I say unless a voluntary code works, we will legislate for it.

BBC: NEWS | UK | UK Politics | In full: Tony Blair's speech

For I say to you, that unless your righteousness exceeds the righteousness of the scribes and Pharisees, you will by no means enter the kingdom of heaven.

FORBES: Bank Of America Website Down...Again

When I say we do not charge taxes unless you are from New Jersey, they almost always buy.

FORBES: Death of an E-Salesman