The phrase "a line over a" is not complete and lacks context, making it difficult to determine its correctness in written English.
It could be used in mathematical or graphical contexts, such as discussing a line segment or notation.
Example: "In geometry, we often represent a line over a segment to indicate its length."
Alternatives: "a line above a" or "a line atop a".
The process for seeking approval from federal agencies is so disjointed and slow that pushing a line over a national park or river might as well be crossing the Styx.American Electric Power (AEP) built a transmission line from West Virginia to Virginia in two years.
The car may look like a tin can covered with solar panels, but when the inventor took it out for its first test drive in 2008, he passed a line over a mile long of drivers waiting to get into a gas station.
Briefly, color images were first converted to an 8-bit grayscale, drawing a line over a known distance on the photographed ruler, and then globally assigning this distance using the Set Scale command to assign the measurement scale of each image.
"If you repeat a line over and over again for an hour, you start forgetting what it means.
The lumen area (a) was estimated by drawing a line over the circle delimited by the intima layer inner interface.
Draw a line over the lash line.
Several hundred riot police milled about, looking up the street toward a front line over which a pall of tear gas hung like a white veil.
They usually look like an "A" with a wavy line over it.
We have marked outright falsehoods on the trailers with a red line over text, while a green line indicates an accurate depiction and a blue one is used for context and other useful information.
Such a line goes over well in a place like Dalton, the southern terminus of the Blue Ridge Mountains.
The trolleys formed a natural dividing line over which a nonstop barrage of missiles came flying through the air.
