We spent the afternoon flying between the treetops on the new zip-lines, laughing the whole way.

The company plans to reopen several branch lines that were closed last year.

She noticed that the space lines in the code were inconsistent, which caused alignment issues.

The designer adjusted the pattern to better follow the natural buttock lines of the mannequin.

Scientists mapped the fault lines running beneath the valley to assess earthquake risk.

The hiker used contour lines on the map to avoid steep climbs.

Archaeologists debate whether ley lines truly guided the placement of ancient monuments or are just coincidental alignments.

Many factories have implemented robotic systems to improve efficiency on their assembly lines.

Before digging, the crew marked the locations of the gas and water service lines.

The general ordered that the supply lines be secured before the offensive began.