He was trying to hold onto the line, and not having much luck.

It switched onto the main line from a spur a few miles back.

The switch onto the main line was not very far down, and I reached it in ten minutes.

Ross held onto the line until his death in 1904.

Blood fell onto the line she'd drawn in the sand.

It drove through a hedge and fall onto the line below.

Richard refuses to help him get back onto the front line from his current staff job.

After a short delay, the clerk came back onto the line.

They backed their train onto the main line just before the lead special arrived.

I believe that Chin was onto the same line of thought.