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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The ring roads that roar around Mexico’s big cities have speed limits of up to 80kph.

盘踞于墨西哥各大城市周边的环城公路已经将最高时速限制提高至80公里/时。

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He gagged a costly ring upon the speed of his greyhound.

他押上一只昂贵的戒指以示他猎犬的速度。

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But the next implication is that tighter integration of the eurozone countries would put Britain more clearly on the outer ring of a two-speed Europe - less integrated and showing every sign of wanting to stay there.

BBC: Britain pushes hard choices for Europe's hard core

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

The ring roads that roar around Mexico's big cities have speed limits of up to 80kph.

ECONOMIST: How half of Mexico ended up without driving tests