从古代直到冷战时期再到现在的许多故事，在这里都能读到，还有视听演示，或许最有趣的是能够让人亲历其境的人机互动电脑游戏。

From ancient times through the Cold War and into the present there are many stories, audio-visual displays, and perhaps the most fun, 10 hands-on, interactive computer programs.

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我决定不使用幻灯演示稿或借助其他视听设备，因为我觉得我们对这些工具有点儿过于依赖。

I decided not to use a powerpoint or other audio-visual AIDS, because I think we've become too dependent on these tools.

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