berulang-alik Anglais:

Yesterday I was moving to my new flat at the other end of the building. So I had to walk back and forth to transfer all my stuff along the corridor all day.

And it goes back and forth, you know?

She swayed gently back and forth to the music.

back and forth

If you work from house you don't need go back and forth to work everyday

He was so nervous that he began pacing back and forth.

when he's bored he'll start running back and forth along the fence

I’ll be flying back and forth for the next few week

We travel back and forth all the time between Canada and England.