Maybe it won't now that we have better plans to prevent things like that, but suppose it did happen.

也许现在不会，我们有更好的方案,阻止这种事情发生，假设它真的发生了。

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But if it did happen,it could happen.

但如果确实发生了，它是可能发生的。

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It's seeking to ascertain the meaning of events to draw larger philosophical, ideological conclusions from the events of history, and to point to the larger purpose or design of history, not to say just what happened, but to say why it happened and what it means for us today that it did happen.

它致力于查明事件的意义,得出哲学性的思想性的结论，从历史事件中，并且指出历史图景中的宏观目的，不说发生了什么，而阐明为什么它会发生,而它发生了对于今天的我们有何意义。

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But how and when did it happen?

但这是什么时候怎样发生的呢

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