This is confidential, but I know that I can rely on your discretion.

这是机密，不过我知道你靠得住。

《牛津词典》

I know expert of that, but I think you can try lifting weights and do at least 200 sit-ups twice a day.

我知道这方面的专家，但我认为你可以试试举重并且做至少200个仰卧起坐，每天做两次。

youdao

I know it's uncommon to offer a high school student this volunteer job, but I hope that you can make an exception for me, and I'll prove myself.

我知道让一个高中生做这种志愿工作并不常见，但我希望您能为我破例一次，我会证明自己的。

youdao

Look, Bella, I know I'm notthat much fun to be around, but I can change that.We can do more stuff together.

VOA: standard.other

We have no idea what this menacing contraption actually is supposed to look like or what it's actually intended to signify, but we can know, I think, with some certainty that it's not scrannel.

我们无从得知这个威胁性的装置,实际上是什么样或者要代表什么，但是我们可以通过一些并不细小的确切性得知。

耶鲁公开课 - 弥尔顿课程节选

I can't tell you everything that we will do, but I know you will like it.

我不能全部透露给你，但你肯定会喜欢的。

When 实战 - SpeakingMax英语口语达人

My prediction is that it will probably come in June but I can't absolutely be certain of that and my prediction is that I know that we can win and my prediction is that we'll now pull together and we'll do enough to win but I know certainly that we can.

BBC: News Online

"I can't say that I am optimistic for what is going to happen, but I know that to the extent that I can, I will try to influence those of my friends who voted angrily the previous time now to give (it) a second thought, " she said.

CNN: Fear and confusion rule as Greece faces uncertain future

But I really like that I know I can run a mile - the idea of a half-marathon isn't so out of the realm of possibility these days.

CNN: Paging Dr. Gupta Blog