Sorry, I couldn't help overhearing, did you mention something about...

对不起，我无意中听到你们的谈话，你们是不是提到...

We enjoyed our trip to Europe.

这次到欧洲旅行，我们非常愉快。

Jeans are popular among the young.

牛仔裤很受年轻人喜爱。

I've been studying all day, and I'm sick and tired of it.

我学了一天，现在感到厌倦。

He is in conference right now.

他现在在开会。

I'd like to help you, but...

我很想帮助你，但是…