Quartz is quartz—a silicon ion surrounded by four oxygen ions—there's no difference at all between two-million-year-old Pleistocene quartz and Cambrian quartz created over 500 million years ago.

石英是石英——由四个氧离子围绕的硅离子——200万年前的更新世石英和5亿年前的寒武纪石英之间没有任何区别。

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In the meantime, 70-year-old Corliss Keith, who was in the high protein group in Starr's latest study, says she feels a big difference.

与此同时，斯塔尔的最新研究中属于高蛋白组的70岁的科里斯·基思说，她感到有很大的不同。

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The old man's words made a great difference to the boy's life.

老人的话对这个男孩的人生产生了很大影响。

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The difference between old and new 'cue goes as deep as the meat itself.

WSJ: The New Barbecue

But the greater experience of 27-year-old Henin proved the difference in the decider.

CNN: Tennis: Returning Henin battles on

What is really being said here is that if Greece leaves then Greece can, quite legally, simply state that all debts contracted under Greek law can now be settled in the New Drachma and the fact that this is worth less than the old euros makes no difference.

FORBES: The Important Phrase About the Coming Eurozone Breakup: Lex Monetae