back and forth

US /bæk ən fɔːrθ/
UK /bæk ən fɔːrθ/
"back and forth" picture
1.

maju mundur, bolak-balik

moving first in one direction and then in the opposite direction repeatedly

:
The pendulum swung back and forth.
Bandul berayun maju mundur.
They walked back and forth across the room.
Mereka berjalan maju mundur melintasi ruangan.
2.

bolak-balik, antara dua titik

between two points, people, or places

:
The ball went back and forth between the players.
Bola bergerak bolak-balik di antara para pemain.
They exchanged emails back and forth for days.
Mereka bertukar email bolak-balik selama berhari-hari.