Researchers observed unusual polysynthetic twinnings in the crystal samples.

As the only Catholic twin at school, she often led the prayers before class.

The twin-masted schooner slipped quietly out of the harbor as the sun rose.

The engineer explained how the twin-clutch gearbox shifts gears faster than a conventional automatic.

The twin prime pair (41, 43) is often cited as a classic example when teaching number theory.

During the ultrasound, the doctors were concerned that the monochorionic pregnancy showed signs of stuck twin syndrome and planned closer monitoring.

Researchers catalogued several twin prime pairs up to the current computational limit.

At the genetic clinic, doctors compared the mirror-image twin’s features and confirmed that many of her asymmetries were opposite those of her sibling.

Twin Falls County announced a new economic development plan focusing on tourism around the Snake River Canyon.

Several high-performance sports cars now come equipped with twin-clutch gearboxes to deliver faster shifts and improved efficiency.