back and forth

Переводы
взад и вперед
He paced back and forth in the room.
Он ходил взад и вперед по комнате.
Определения
A repeated movement or action in one direction and then in the opposite direction, often used to describe a discussion or negotiation that involves alternating opinions or arguments.
Слова
back

наречие
назад
forth

наречие
вперёд