我确实知道玉米笋在欧洲是非常昂贵的。

I know for a fact that baby corn is very expensive in Europe.

《柯林斯英汉双解大词典》

我确实知道一些东西就是能引起人们的兴趣，不过这无所谓，这在世界各地都有效。

I do know that there are some things that just catch people's interest and it doesn't matter — it works anywhere anyplace in the world.

youdao

他说：“我确实知道我们双方需要对方，而且双方各自都认识到这一点。”

I do know that we need each other and each side recognizes that.

youdao

And also that we know that the zero does not count as a node, if per se I actually had managed to hit zero in drawing that, so the correct answer would be the bottom one there.

另外你们要知道零点不是节点，假设说我确实把零点画成０了，那正确的结果就是底下这个。

麻省理工公开课 - 化学原理课程节选

which is, I don't know why I really wanted the tent, but I really, really did.

当时，不知道为什么我那么想要，但是确实很想要。

FAO Schwarz的回忆 - SpeakingMax英语口语达人

They claimed that they were of the same race as the gods, and I really don't know of anybody else who made that claim.

他们认为自己和神明是同一个种族,我确实不知道还有另外的人有过这样的说法

耶鲁公开课 - 古希腊历史简介课程节选