However, one solitary person or movement can change the course of history.

不过，运动可以改变一个人或孤独的历史过程。

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They can spur others to action, begin movements, and change the course of history.

它们能激人付诸行动，开始运作，而且可以改变历史的进程。

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This is the worry that someone could go back in time and change the course of history.

这是对人如果回到过去就会改变历史进程的担忧。

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President Reagan showed that by speaking the truth one can change the course of history.

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And that kind of leadership is not just about dramatic events that change the course of history in an instant.

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"We can change the course of human history, " "Kony2012" promises its audience of littles.

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