These changes weren't happening in a vacuum.

这些改变并不是凭空出现的。

And the long-sought holy grail of ubiquitous voice recognition really will eventually happen.

人们长期以来向往无所不在的语音识别最终将成为现实。

But there are different accounts about how this happened.

但对于这次事件如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。

Satellite data often tells you what happens after it's happened.

“卫星数据通常在事后才会告知你发生了什么事。”

Tom, you were where when this was first happening?

Tom，当这件事发生的第一时间你在哪里？

But he is saddened that the connection could not happen sooner.

但令他难过的是，这样的和解不能早点发生。

And I know that things don't just happen.

我知道好事不会随随便便发生。

How does that happen, how does this transformation happen?

这是怎么发生的，这种变化是怎么发生的？

The big question is, what are the guarantees that it will not happen again?

重要的问题是，怎么能保证这种事不会再发生？

And that doesn't happen by cramming.

但是死记硬背并不能实现这一过程。

But most experts agree that it didn't happen naturally.

但多数专家认同它并不是自然天成的。

You automatically ask the question how did that happen.

你会自然而然地问，这是怎么发生的。

Actually, between ourselves, the visit will probably never happen.

私下里说，其实很可能不会有什么访问了。

They have to exercise on special machines every day so that this doesn't happen.

他们必须每天锻炼防止这种情况发生。

Yeah, I called them on my cell phone right after it happened.

是的，车祸刚发生，我就用手机打电话报警啦。

I did a little, but only after everything had happened.

聊了一点，不过是在一切发生之后。

That's the point what you heard did not happen.

这就是你听到的事情没有发生的原因。

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

哦，不不不。这可糟了。

There's a natural concern that that could happen again.

目前外界普遍担忧会再次发生这种情况。