Astronomers studied several Einstein rings to map the distribution of dark matter in distant galaxies.

The dancer adjusted the heel rings on her shoes before the performance.

Prison rings run by inmate leaders smuggled drugs and phones into multiple facilities.

The divers discovered several piscatory rings tangled among the coral, evidence of old fishing practices.

Before the engine test, the technician inspected the seal rings for cracks and replaced any that were worn.

He inherited several signet rings that had been passed down through generations.

He blew perfect smoke rings that drifted across the room.

The linguistics seminar examined how synonym rings affect search engine results.

The technician inspected the v-rings for wear before reassembling the pump.

Many people prefer vaginal rings for long-term contraception because they are easy to use.