Researchers compared the growth rates of several cell lines under identical conditions.

Hard lines, I know you were saving up for that trip and now the refund has been delayed.

When the factory shut down, the workers knew hard lines were coming for their families.

Before the wind picked up, she walked around the campsite checking the guy lines to make sure the tent was secure.

The comedian's punch lines landed perfectly, leaving the audience roaring with laughter.

The curator emphasized the magistral lines in the ancient tapestry as the defining feature of its craftsmanship.

Make sure the tripping lines are coiled neatly after each reefing to avoid accidents.

Please review the proof and add correction lines where the margins are inconsistent.

The artist used fine lines to capture the texture of the fabric.

The factory upgraded its production lines to increase output and reduce waste.