• He relates a conversation with the former Soviet leader's closest advisor, Alexander Yakovlev, about how top Kremlin officials came to view the system as permanently flawed."

    VOA: standard.2009.11.03

  • And this is top view of a water tank.

    这是关于水槽实验最好的观点。

    麻省理工公开课 - 固态化学导论课程节选

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