It's easy to buy our food from the local supermarket, so why do we go to the trouble of growing our own?
从当地的超市买到食物很容易，那么我们为什么要自找麻烦自己种植粮食呢？
Where is it from? And why do we use it ?
它源起何处？我们为什么要使用它？
Why do we have public schools and why do we have teachers?
为什么我们会有公立学校？会有老师？
Why are we reluctant to ask questions and why do we stick our heads in the sand?
为什么我们不愿意提问题？为什么我们象鸵鸟一样把脑袋埋到沙子中？
The truth is, science still doesn't have a definitive answer to the question: why do we dream?
事实是，科学家们依然没有一个确定的答案来解答人类为什么会做梦。
So if you had some number back in grade school like 123, well, why do we express this as 123?
在小学，像123这样的数，为什么我们要表达成123这样的呢？
Or why do we always wait for someone to apologize to us first instead of doing it ourselves?
或者，为什么我们总是等着别人先来道歉，而不是我们自己先去？
If pharmaceuticals only work for half the population why do we still need to test them on animals?
既然药物只在半数人身上有效，我们为什么还一直要在动物身上做药物测试？
If so, why do we listen carefully? What's the benefit do we attain from listening or reading?
如果这样的话，那我们又费什么神去听讲呢？我们从看书、听讲中又得到什么益处呢？
The question was: When it thunders , why do we see the lighting first， then hear the thunderrolls?
这个问题是：为什么在打雷时，我们总是先看到闪电后听到雷声？
If this is the case, then why do we cling so tightly to the idea that the right expert will save us?
如果事情真的是这样，那么我们为什么要死死抱住合适的专家能够拯救我们的想法呢？
Dream research offers many theories - but still no definitive answer to the question: why do we dream?
关于梦的研究得出了很多的理论，但是对于“我们为何会做梦”这个问题依然没有一个很确定的答案。
If content sits at the top of the food chain why do we spend so much time talking about the finer points of design?
如果说内容占据食物链的顶端，那为什么我们还要花大量时间在在讨论更好的设计上？
One of the questions you may ask is: because XFDL is based on XML, why do we need to create another block of XML to carry the data?
您可能会问：既然 XFDL是基于XML 的，那么为什么还需要创建另一个 XML块来携带数据？
Q: It’s against IASC (Inter-Agency Standing Committee) guidelines, why do we continue to see psychotherapists parachuting into emergency situations?
问：虽然违背机构间常设委员会指南，为什么我们仍不断看到紧急情况期间精神治疗医生空降现象？
If women are already making such contributions to economic growth, why do we need a major realignment in our thinking, our markets, and our policies?
如果妇女已经在为经济增长作贡献，为什么我们需要在我们的思维上、我们的市场和我们的政策上作重新重大调整呢？
Of course, this finding raises the obvious question: if our memories aren't all that fuzzy, then why do we often forget the details of things we want to remember?
当然，这项发现也提出了显而易见的问题。如果我们的记忆并非都那么模糊，那为什么我们老是忘记我们所要记住事物的细节呢？
So why do we do something where the cons (stress, frustration, family conflict, loss of time for other activities, a possible diminution of interest in learning) so clearly outweigh the pros?
为什么我们要做一件这样的“弊”(压力、失望、家庭冲突、占用其他活动时间、减少学习兴趣的风险)远远大于“利”的事情呢？
I'm going to be trying to explain fundamental aspects of ourselves including questions like how do we make decisions, why do we love our children, what happens when we fall in love, and so on.
我将试着去解释一些我们遇到的基本问题，包括我们如何决策，我们为何喜爱我们的孩子，堕入爱河时会发生些什么，等等？
We have an assumption that humans have some right to privacy, so why do we not assume that for other species, particularly when they are engaging in behaviour that suggests they don't want to be seen?
我们认为人类有某种隐私权，那么为什么我们不认可其他物种也有隐私权呢？特别是当它们正在从事的行为暗示它们不想被看到时。
Why do we like roller coasters?
为什么我们喜欢过山车？
我们为什么要支付税款和费用？
为什么需要IP地址？
"Why do we eat dandelions?" I asked.
“我们为什么吃蒲公英？”我问。
Why do we need vitamins and minerals?
我们为什么需要维他命和矿物质？
Why do we put curtains on some Windows?
为什么我们在一些窗上装窗帘？
Why do we need to eat coarse food grains?
为什么我们需要吃粗粮？
Why do we need to eat coarse food grains?
为什么我们需要吃粗粮？
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