他正在谈论开创全新的事业。

He's talking in terms of starting a completely new career.

《牛津词典》

想到就在这会儿他们大概正在谈论他，他不禁笑了起来。

It amused him to think that they were probably talking about him at that very moment.

《牛津词典》

他们正在谈论一张照片。

They are talking about a photo.

youdao

I'd like to look with you at "The Song of the Wandering Aengus" as a kind of model of the kind of poem I'm talking about and its aesthetics.

我想让你们读读,流浪者安古斯之歌“,最为我正在谈论的诗歌,和其美学的代表来读。

耶鲁公开课 - 现代诗歌课程节选

Or maybe you're meeting somebody and discussing their personal life for the first time.

又或者，你正在和某些人见面，他们第一次跟你谈论私生活。

It sounds like 课堂 - SpeakingMax英语口语达人

What I want to do is talk about what the Fed in this country is doing and what other central banks are doing.

我想谈论一下,这个国家的联邦政府正在做什么,并且其它的中央银行正在做什么。

耶鲁公开课 - 金融市场课程节选