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- How did the difference come? 差异是怎样发生的？
- Describe the difference between conventional and toxic organics. How do the rel-ative amounts of each allowed in water compare? 描述传统有机物和有毒有机物的不同，怎样比较二者在水中所允许的相对量？
- How did the house come to be burned down? 那房子怎么被烧掉了?
- How did the Eric canal come in to being? 艾利克运河是怎样筑成的?
- How do you account for the difference between them? 你怎样来解释它们之间的差异呢？
- Ex: How did the accident come about? 这意外事件是怎麽发生的？
- How did the construction work bog down? 建筑工程怎样会停下来的？
- How do you calculate the difference? 这些差额怎么计算?
- How did the accident come about? 那次意外事件是怎么发生的?
- How did the young wife keep her husband off alcohol all last year? 过去的整整一年中这位年轻的妻子是怎样使她丈夫不沾一滴酒的？
- How did these differences come about? 这些差异是如何产生的呢?
- How does the difference in thread forms effect the tooling used to produce NPT and NPTF threads? 这两种螺纹在目测时是相同的。两种在一英尺的长度上都有3/4的锥度。
- How do you think these differences come about? 你认为这些差异是如何产生的?
- How do the different authors conceive of norms - what is a norm? How should we define norms? Are they useful constructs? 不同的作者如何构思准则-准则是什么?我们应如何定义准则?它们是否为有用的架构?
- How did the editor respond to our suggestion? 编辑对我们的建议反应如何?
- How did the escaping prisoners get past the guards? 那些越狱的囚犯是怎样毫不费力地躲过警卫的?
- How do we calculate the difference? 差额怎么计算?
- How did the news of his promotion get about? 他晋升的消息是怎么传出去的?
- How did the rumour of her death get about? 关于她死的谣言是怎样传开的。
- How do you discern the difference? 你要如何辨别（真伪之间）的区别呢?
