I'm working on it.

我正在努力。

He's behind the times.

他跟不上时代了。

Don't bury your head in the sand.

不要逃避现实。

Did everyone you invited show up?

你邀请的人都来了吗？

Their chances of winning are slim.

他们取胜的机会很渺茫。

I've had no time to prepare for this meeting, so I'll have to play it by ear.

我没有时间来准备这次会议，所以只好有什么说什么。