It is the first great revolution in the affairs of mankind of which history has preserved any distinct and circumstantial account.

这是人类事务中的第一次伟大革命， 历史上对它保留了任何明确的和间接的记载。

The fall of the western empire is the third great revolution in the affairs of mankind, of which ancient history has preserved any distinct or circumstantial account.

西方帝国的没落是人类事务中的第三次大革命，古代历史对此有任何明确或间接的记载。

So astronauts have begun photographing parts of the ISS daily, like a wall of tools to help researchers record study and preserve an account of what life is like in zero gravity.

因此，宇航员们已经开始每天拍摄国际空间站的一部分，比如一面墙上的工具，以帮助研究人员记录研究，并保存失重状态下生命的记录。