I am positive that he is right.

我确信他说的对。

youdao

I am positive about what I saw.

我确信我昨天看到了什么。

youdao

I am positive.

我积极向上。

youdao

And I am positive about our conversation.

我对我们的谈话持乐观态度。

Let me 实战 - SpeakingMax英语口语达人

So this, unfortunately, is the last time that I am teaching positive psychology or any other class for that matter at Harvard.

不幸的是这学期将是我最后一次，在哈佛开设积极心理学或其他课程。

哈佛公开课 - 幸福课课程节选

So zero is supposed to be neither positive nor negative, and here I am just simplifying and saying it's actually going to be negative.

所以0不是一个正数，也不是负数，在这里我只是简单地,说明它实际上会是负数。

哈佛公开课 - 计算机科学课程节选

So, I am positive that commercials selling super-sugary treats are having an effect on our children.

FORBES: Op-ed: Disney's Junk Food Ban Doesn't Address Root Issues

However, I am positive he would have made it pretty easily had none of this taken place.

NPR: Ripken Enters MLB Hall of Fame, McGwire Snubbed

Now my views have definitely changed as I am positive that what I saw that morning was something very unusual.

BBC: Surrey puma sightings: Timeline