in a single line
通行されたい方は一列に並び身分証明書を提出し
Those wishing to pass, please line up single file and present your identification.
— AKIRA (1988)
横一列に並べ！
Line up in a single row!
— 続・夕陽のガンマン (1966)
椅子が一列に並び、私はいちばん前にいた。
The chairs were lined up in a row, and I was at the very front.
一列に並べて
Line up in a single file.
— 自転車泥棒 (1948)