送交者: 呱唧呱唧 于 2009-02-17, 13:55:25:

回答: Einstain was at the front of then current physics research, this guy is not, nor 由 chouqilozi 于 2009-02-17, 12:59:16:

• 必要条件的关系，尽管不是充分条件。 - 田野 (44 bytes) 2009-02-17, 14:42:17 (299969)

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