If you want to spot a track's groove, look for a wide black line that follows each of the turns.
The final stretch was a wide, straight line with a regular 4% gradient.
He focused on a group at the centre of the wide line.
His forces were spread thinly over a wide defensive line.
In their desire not to lose Blade's trail they'd spread out into a wide line.
A great wide line of gray stretched off across the level desert straight to the east.
The start of a race is marked by a white line 5 cm wide.
They were now on a strong, wide magnetic line.
They had a wide line of scouts and guards out, so we couldn't get too close, but it looked good enough to stop cavalry.
I was hearing voices, shouting, and saw many wide lines.