Meaning: The workers are working hard and are sweating as a result.
Choice of Words: "Sweat" is a liquid produced by the body when it is hot or during physical exertion. "Drips" means to fall in drops. "Brows" are the ridges of bone above the eyes.
Alternative Expressions
Sweat pours from their brows.
Meaning: This means that they're sweating a lot, probably because they're really hot or working really hard.
Choice of Words:Pours means to flow or fall in a steady stream. It's a more dramatic word than drips, so it gives the impression that they're sweating even more.
Sweat streams down their brows.
Meaning: This means that they're sweating a lot, probably because they're really hot or working really hard.
Choice of Words:Streams means to flow in a continuous current. It's a similar word to pours, but it suggests that the sweat is flowing more smoothly.