All right, so I'm going to be optimistic.

好了，我现在乐观假设。

耶鲁公开课 - 死亡课程节选

Well, I think that you should definitely be very optimistic because

嗯，我想你当然应该很乐观，因为

事业就是挑战 - SpeakingMax英语口语达人

Perhaps you are a little bit more optimistic, a little bit more utopian-- human nature can be improved.

也许你更乐观，更加乐天，人性可以改善。

哈佛公开课 - 幸福课课程节选

I think in some ways my hope is, maybe it's more just my optimistic spirit, my hope would be that Muslims would feel like this is the place where they could really thrive within their Muslim identity, and yet be part of the American dream.

我的希望是，这也许只是我的一厢情愿,穆斯林人民能觉得这片土地才是,穆斯林民族保持传统,繁荣昌盛的地方，但仍然是美国梦的一部分。

普林斯顿公开课 - 人性课程节选

I think you need to be more optimistic.

我觉得你需要更乐观一点。

There is 实战 - SpeakingMax英语口语达人