These changes weren't happening in a vacuum.

些改变并不是凭空出现的。

But there are different accounts about how this happened.

但对事件何发生也有不同的言论。

Human flow has always happens in human history.

人口流动是人类历史上经常发生的事。

And that doesn't happen by cramming.

但是死记硬背并不能实现一过程。

Oh, no, no, no. What a thing to happen.

哦，不不不。可糟了。

And there are many points where their failure happens.

失败的因素出现各个环节。

To put it simply, everything happens instantaneously.

简单来说一切都会瞬间完成。

All these things can happen to anyone, and they happen to everyone.

所有一切都可能发生任何人身上，也确实发生每一个人身上。

It suggests that the work is happening.

表明工作正进行。

Without it, the competition could not happen.

们没有招，个比赛也没啥比的。

I think that this happens since March.

我认为是从 3 月份开始的。

How old was she when this happened?

件事发生的时候她多大？

That's thought to have happened after breakup of the Soviet Union.

据了解，自从苏联解体之后，类交易就开始了。

But I'll give you a hint why this is happening.

但我会给你们一点提示， 为什么会发生样的事。

I realised clearly that something extraordinary was happening.

我清楚地意识到某些不寻常的事情要发生了。

I was waiting for a miracle to happen.

我等待一个奇迹的发生。

Of course, it doesn't happen like that.

种情况当然不会发生。

Explosive decompression happens infrequently, but it does happen.

爆裂性失压很少发生，但确实有种现象。

Uh, yeah, I mean some is already happening.

“嗯，是的，有些已经发生了。”

So it's clear that something has happened there.

因此，那里显然进行了军事行动。