Barbara: How did it happen?

芭芭拉：你们怎么认识的？

How did it happen? I switched cocks.

“原因是什么？”！“因为，我把公鸡给换了。”

In some cases, these people were good swimmers. So how did it happen? Riptide!

而这些溺水的人中有些是很会游泳的。那么这究竟是怎么发生的呢？是激潮在作怪！

How did it happen?Johnny: We betted who could lean further out of the window, and he won.

约翰尼：我们比赛谁能探出窗口远一些，结果他赢了。

So how did it happen that people all over the world knock on wood, or avoid stepping on sidewalk cracks?

那么为什么世界各地的人都会敲木头，或者避免踩在人行道的砖缝？

How did it happen that such a man had not been brought before a provost 's court , on the return of the legitimate princes?

正统的王爷们回国后，怎么会没有人把他告到特别法庭里去呢？

How did it happen that the two most powerful men of earth stepped to the threshold of a dramatic arms control accord and then stepped back?

两个超级大国的领袖为何刚刚开始着手达成重大军备控制协议，就又犹豫不前了呢？