面对这些积累起来的智慧，问题是为什么这么多的教育工作者认为减少或取消课间休息是可以接受的。

In the face of this accumulated wisdom, the question is why so many educators decided that it is acceptable to reduce or eliminate recess.

youdao

美国西南地区考古的一个主要问题是，为什么这么多令人印象深刻的定居点，甚至整个地区，在史前时代就被废弃了。

A major question in the archaeology of the southwestern region of the United States is why so many impressive settlements, and even entire regions, were abandoned in prehistoric times.

youdao

为什么这么多学生缺少睡眠？

Why are so many students short of sleep?

youdao

Does it give you the answer that you expected it to give? Often, in practical problems, you'll spend just as much time doing performance debugging. Why is it slow?

它返回了期待中的结果了么？通常,在实际的问题中你会花，同样多的时间在性能调试上,它为什么运行这么慢？

麻省理工公开课 - 计算机科学及编程导论课程节选

Can you explain to us about stem cell research and why it's so controversial?

你能跟我们解释一下干细胞研究，
以及为什么这项研究会受到这么多的争议吗？

干细胞和伦理 - SpeakingMax英语口语达人

That is why you paid so much money to come here.

那就是你们为什么要花这么多钱来这的原因。

麻省理工公开课 - 固态化学导论课程节选