That was the question; but he did not know how to answer it.

那就是问题所在；可是他却不知道怎样回答。

youdao

Stephen Jay Gould, for example, argues that continental drift theory was rejected because it did not explain how continents could move through an apparently solid oceanic floor.

例如，斯蒂芬·杰伊·古尔德认为，大陆漂移理论之所以被否决，是因为它没有解释大陆是如何穿过明显很坚固的海底的。

youdao

When they saw how deep the hole was, they cried to the two frogs that they could not be saved.

当看到洞这么深时，它们对两只青蛙喊道救不了它们了。

youdao

It was a place where people owned things that they did not know how to use.

VOA: special.2010.01.03

And what I recognized was first of all, how impoverishing that was spiritually to not be able to bring my faith identity into the public square.

而我意识到,第一，我们精神上很枯竭,因为我们不能将自己的宗教身份,带入公共场所。

普林斯顿公开课 - 人性课程节选

How was it that the people can see what's good around and yet not do it.

人们能够看到周围可做的善事,但为什么都不去做呢？

普林斯顿公开课 - 人性课程节选

The question, of course, was how, and that was not an easy one for a 10-year-old to figure out.

FORBES: Inside Look: The Story Behind Idealist.org

That was Linda Ronstadt but that's not how the song was written.

NPR: Ukulele Madness �� You Heard It Here First!

"I am sorry for the loss of your son, " the suspect said, adding that he had not known how old the teenager was, and did not know that he was unarmed at the time of the shooting.

BBC: Florida judge sets George Zimmerman bail at $150,000