在历史的长河里，你就是中国的河山。
在历史的长河里，艺术和科学仪器推动着人类社会文明的进步。
In the long stream of history, art and scientific instruments have been pushing the progress of human civilization.
在历史的长河里，这三者都只是新生事物，我们还有很多要去探索。
In the arc of history, all three substances are still new, and we have a lot to learn about them.
这个世界是件小事儿，在银河系里，在漫漫宇宙里，在延绵不断的历史长河里，它只不过是一个小点而已。
The world is a small thing. A tiny dot in a galaxy, in a universe, in a long long stretch of time.
在人类历史的长河里，每天都在发生大大小小小，可怕的，市场流动的事情，这些灾难从来都没有间断过。
In the history of human history. Something big, terrifying, and market-moving happens every year without fail.
在世界历史的长河里，只有少数几代人被赋予了在自由面临最大危机时捍卫自由的使命，我不会畏缩于这一责任——我欢迎它！
In the long history of the world, only a few generations have been granted the role of defending freedom in its hour of maximum danger. I do not shrink from this responsibility — I welcome it.
在世界历史的长河里，只有少数几代人被赋予了在自由面临最大危机时捍卫自由的使命，我不会畏缩于这一责任——我欢迎它！
In the long history of the world, only a few generations have been granted the role of defending freedom in its hour of maximum danger. I do not shrink from this responsibility — I welcome it.
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