alternately; by turns; one after the other
Describes actions or states that occur in a repeated alternating pattern between two or more participants or elements.
The two of them sang songs alternately.
赤と青のランプが交互に点滅している。
Red and blue lamps are flashing alternately.
My brother and I took turns driving.
The red and blue lights flashed alternately.
You walk by moving your feet alternately, left and right.