我们非常确信克拉克将被释放。

We have this definite certitude that Clark will be freed.

《柯林斯英汉双解大词典》

我对此非常确信，尤其是当竞争对手很难抄袭的时候。

I am certain of it, especially if it's difficult for a competitor to copy.

youdao

他现在非常兴奋，大步走进他的房间，去寻找他确信会给他带来美妙惊喜的东西。

He was very excited now and sped into his room to find what he was sure would be a wonderful surprise.

youdao

Now I think you may be rather happy to hear that this is the last time --I'm pretty sure that this is the last time - that we will have to discuss, at least at any length, Milton's worries about his unreadiness and his un-preparation.

你们可能会很高兴知道,这是我们最后一次-我对此非常确信,最后一次需要仔细的讨论，弥尔顿对他自身的犹疑和毫无准备的焦虑感。

耶鲁公开课 - 弥尔顿课程节选

So usually, I don't have to do much more than google, and turn in the first sentence and sure enough,

所以，我经常谷歌，输进第一句话，然后非常确信，

对于抄袭的想法 - SpeakingMax英语口语达人