I'll be back in a few minutes.

我一会儿就回来。

《牛津词典》

"Hang in there, I will be back in a few minutes".

“你再坚持一下，我马上就回去”。

youdao

Take your time deciding. I'll be back in a few minutes .

慢慢决定，过几分钟我会再来。

youdao

The mere proximity of the school to the Ryder campus could bring productivity gains to Ryder: When a parent has to attend a teacher conference, or watch his child's soccer game, he can be back at his desk in the space of just a few minutes.

FORBES: Build it and they will come