In a line; in a row—objects or people arranged neatly in a long line or row.
店の前にずらっと行列ができていた。
There was a long line in front of the store.
本棚に本がずらっと並んでいる。
Books are lined up neatly on the bookshelf.
テーブルに料理がずらっと並べられた。
Dishes were laid out in a row on the table.