The chemist Kekule discovered the ring structure of benzene in a dream.

化学家凯库勒在梦境中就发现了苯的环形结构。

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The green ring structure near the center of the image is about 77 light-years across.

图片中间的绿色环状结构的跨度大概有77光年。

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Friedrich Kekule discovers the unique ring like structure of the molecule benzene right after he wakes up from a day-dream about snakes chasing their own tails and forming rings.

弗里德里希·凯库勒发现分子苯的结构想一个环状的客观事实，正是醒于当天的一个白日梦后知道的，在梦里他梦见一群蛇都在追逐着各自的尾巴，于是形成了好多环形。

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It is narrow in the middle. On top is a large ring-like structure.

VOA: special.2009.03.04

The new materials are based on a design known as the "split ring" structure.

BBC: Last Updated: Monday, 8 March 2004, 09:03 GMT

The headquarters will replace 26 office buildings (some previously occupied by HP) with one massive ring-shaped structure a four-story, 2.8-million-square-feet circular building that will house up to 13, 000 employees.

FORBES: From Apple to Zappos, What a Headquarters Design Reveals About a Company's Culture

The ring-fence structure makes a distinction between the bits of banking that need saving (deposit-taking banks, payment systems and the like) and the bits that do not (bonus-gorging investment bankers).

ECONOMIST: Banking reforms