She was wearing a brilliant white gown, and a ring of light encircled her head.

她身穿一袭明亮的白色长袍，头上笼罩着一圈光环。

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An annular eclipse occurs when the moon does not cover the entire disc of the sun so that a ring of light encircles the shadow of the moon.

当月亮不能完全遮住太阳时，月亮影子的周围就会有一圈亮光，日环食就发生了。

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At full power, trillions of protons will race around the LHC accelerator ring 11, 245 times a second, travelling at 99.99 percent the speed of light.

全功率运行时，数兆的质子在大型强子对撞机的加速环中加速，一秒钟可绕行11245圈，速度达到光速的99.99%。

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In addition a ring of IR light emitting diodes (LEDs) are used to illuminate the hand and determine the position of the user's fingertips.

BBC: Digits demo screenshot

On the middle finger of his right hand he wore a ring with an oblong piece of faceted green glass that caught the light.

NEWYORKER: Election, Monitored

The discovery eventually came about using the Large Hadron Collider (LHC), a machine at CERN that sends bunches of protons round a ring 27km in circumference, in opposite directions, at close to the speed of light, so that they collide head on.

ECONOMIST: The Higgs boson