Researchers tested several ground effect machines along the shallow coastline to measure lift and fuel efficiency.

Engineers monitored the ground-effect machines as they skimmed the sea to collect data on stability and fuel consumption.

The hospital acquired several state-of-the-art heart-lung machines to prepare for complex surgeries.

Reverse vending machines at the entrance of the supermarket help customers return bottles for recycling.

The factory upgraded its old dynamo-electric machines to improve reliability.

Scientists debated whether forward time machines could be moral instruments or dangerous tools.

The university's physics department displayed several forwards time machines at the exhibition, sparking both wonder and skepticism.

Scientists debate whether backwards time machines could exist without causing paradoxes.

Scientists debated whether backward time machines would violate causality, sparking fierce ethical debates.

The man-machine system in the control room combines operator expertise with automated monitoring to prevent failures.