There could be two more. No one knew how long Kentucky and Missouri would remain in the Union.

VOA: special.2009.08.20

So, how could he know that the charge on the two particles was equal?

就是这两种粒子,电荷量是相等的？

麻省理工公开课 - 化学原理课程节选

Let me show you how you could use this pattern in an example or two or three.

下面我们来看几个例子，看看该如何使用这个句型。

Is it okay 课堂 - SpeakingMax英语口语达人

Two rulings in the United States could change how information is controlled online and in our bodies.

VOA: special.2010.04.09

The two countries could not agree on how to divide Oregon between them.

VOA: special.2009.02.19