The chemist Kekule discovered the ringstructure 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。
2
The green ringstructure 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。
3
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.