It represents the black ring and strength sports.

他是五环中的黑环，代表力量项目。

youdao

Or there might be black rings, which would simply be ring-shaped.

或者可能是黑色的吊环，也可能仅仅是环形。

youdao

Following this process, a black ring is drawn around inside of the graph, and text indicators are added near the various pie slices.

遵循此过程，将在图的内部绘制黑色的圆环，并且文本指示符将被添加到各个饼图分区附近。

youdao

And when I turned 16, I had it made into a ring and we discovered it was actually a star sapphire and not a black pearl.

VOA: standard.2010.05.31

When inserted onto a black background, the black ring will not appear clearly.

FORBES: Olympic Hurdles For Advertisers: The Games' Unique Rules And Restrictions

Jezegabel also grew up outside Paris, the son of a newspaper editor and a lawyer. (In addition to a lot of silver jewelry and a black onyx ring, he wears a vintage Timex compass watch with a grosgrain band.) Unlike Jourden, he's worked on bikes from an early age and has never held an office job.

WSJ: Bespoke Wheels | Making It

The North Koreans started to obtain Chinese-Pakistani enrichment technology in the early 1990s from the black-market ring headed by Dr. Abdul Qadeer Khan.

FORBES: Magazine Article