You can be dead sure of my innocence.

你绝对可以相信我是无辜的。

youdao

I'm sure in a few weeks they'll all be dead.

我敢肯定再过几个星期他们就都死了。

youdao

If you are dead, we can be quite sure that you have an extremely low quality of life.

（求指点——译者）如果你死了，我们完全可以确定你的生活质量非常低。

youdao

When he was sure she was dead, Murlock had sense enough to remember that the dead must be prepared for burial.

VOA: special.2009.10.31

We were absolutely dead sure it would be the same for us.

BBC: Abba will 'never' perform again

Mlilwana says he has received death threats in prison: "I expect any day I will be dead, but before I die I will make sure everything is known, " he told the newspaper.

BBC: News | Africa | 'Police helped South African car-jacker'

So assume away, but be sure to allow for the possibility that your assumptions are either premature, myopic or even dead wrong.

FORBES: Guarding Against Your Own Market Assumptions