Analyzed the principle of slow light propagation in Ruby crystal and it's experiment setting, observed the phenomena of slow light propagation.

分析红宝石晶体中的光速减慢原理及实验装置，观测到极慢光速现象。

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The researchers found that the sand, glass, crystal, marble and Ruby minerals such signs exist.

研究人员发现了沙子、玻璃、水晶、大理石和红宝石之类的矿物存在的迹象。

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Products include gold or silver with diamond, pearl, ruby, sapphire, crystal and zircon jewelry.

产品包括金银镶嵌钻石，珍珠，红宝石，蓝宝石，水晶，锆石等首饰。

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Mention wine tasting to a San Francisco visitor and bucolic scenes of rolling vine-covered Napa Valley hills swirl like a ruby red in a crystal glass.

BBC: San Francisco��s urban wine renewal