他领到了前苏联的解体过程。
然而，苏联解体让一批被收藏起来的新材料面世。
Yet the collapse of the Soviet Union has made available a trove of new material.
二十年前，1991年的夏天，苏联解体。
Two decades ago, in the summer of 1991, the Soviet Union fell apart.
我们正在研读苏联解体对俄国的影响。
We're now studying the influence of the breakup of the Soviet Union on Russia.
我们正在研读苏联解体对俄国的影响。
We're now studying the influence of the breakup of the Soviet Union on Russia.
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