对许多美国人来说，这个假日也是他们回顾历史，反省作为一个美国人意义何在的时候。
And, for many Americans, the holiday weekend is also a time to think about history and reflect on what it means to be an American.
鉴于以上事实，现在回顾历史时，很容易得出《广场协议》是一个坏主意的结论。
Now, given that, it might seem tempting in retrospect to conclude that the Plaza Accord was a bad idea.
工具栏使用简便而且可以节省你随时来浏览我们网页的时间，你可以在任何时候回顾历史纪录，完成一个议价或者监察收支结余。
It is very easy to use and saves you the time you would have had to spend visiting our site whenever you wanted to review or complete an offer or check your balance.
那对于世界来说确实是一个伟大的时刻，回顾历史，我们可以看到自己如何深陷困境，又是怎样走出困境。
It was just a great time for the world, in terms of looking back in history and seeing how we got ourselves into trouble and how we got ourselves out of trouble.
回顾历史可以帮助我们，因为我们不是面对环境挑战的第一个社会。
A historical perspective can help us, because ours is not the first society to face environmental challenges.
一个城市或地区丧失技术优势的原因，或许只有在回顾历史时才能看清。
When a city or region loses its technological edge, the reasons may become clear only in retrospect.
一个城市或地区丧失技术优势的原因，或许只有在回顾历史时才能看清。
When a city or region loses its technological edge, the reasons may become clear only in retrospect.
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