如果这个模型显然没有考虑到量子力学，我们为什么要用它呢?
Why are we using this model if it clearly doesn't take into account quantum mechanics?
我问：“为什么要用木制汤匙呢？”
为什么要用钡附着在黏膜上呢？
为什么要用线程池？
为什么要用线缆？
但是我也一直有一个梦想。为什么要用望远镜来看彼此？
But I also always had this dream: why do we need to use telescopes to look at each other?
没有必要去争论为什么要用不同的词去描述这四个国家。
There is no need to debate any more about why different words are used to describe the four countries.
塞拉：大家终于明白为什么要用巨大的风扇正对着我吹了吧。
Cera: that explains why I had that giant fan blowing in my eyes.
没有必要再去争论为什么要用不同的词去描述这四个国家。
There is no need to debate any more about why different words are used to describe the four countries.
一切都归结到教育，这就是我为什么要用自己的钱办这个学校。
'It all comes to education, that's why I decided to use my money for this school.
但是现在希望我们明白，那是从哪来的，我们为什么要用简化形式。
But now, hopefully, we understand where that comes from, why it is that we use the shorthand notation.
我不明白，我已经跟她说谎了，为什么要用另一个谎来代替呢?。
Leonard:I don't get it. I already told her a lie. Why replace it with a different lie?
我想不通为什么要用这么先进的防盗技术来做这张卡，于是我问导游？
Since I couldn't help but wonder why such sophisticated theft-avoidance technology needed to be used, I commented to my tour guide.
“不过，”埃德蒙说，“为什么要用克劳福德的车，为什么只用他的车？”
"But why is it necessary," said Edmund, "that Crawford's carriage, or his _only_, should be employed?"
可以用六句华丽的句子来叙述的一件事情为什么要用一句简洁的重点句来代替呢？
Why offer a succinct bullet point when you can say the same thing in six flowery sentences?
可以用六句华丽的句子来叙述的一件事情为什么要用一句简洁的重点句来代替呢？
Why offer a succinct bullet point when you can say the same thing in six flowerysentences?
问：我无意中看到了三本“失踪的舰队”系列小说，你为什么要用笔名写作这些书?
FOCUS ON SCIENCE FICTION AND FANTASY(FOSFF): I picked up the three "Lost Fleet" novels. Why are you writing them under a pen name?
一切都归结到教育，这就是我为什么要用自己的钱办这个学校。这个学校能让我开心。
'It all comes to education, that's why I decided to use my money for this school. This school makes me happy.'
我为什么要用这个，做为这个例子的原因是，这是我对于segment的一个小定义。
And the reason I want to use this as an example is, here's my little definition of segment.
汤格力认为，如果神特意把我们造成各有不同，我们又为什么要用同样的方式去爱祂呢？
Gary wondered, If God intentionally made us all different, why should everyone be expected to love God in the same way?
冲动，拖延，人际冲突和缺乏毅力都是些掩饰负面情绪用的策略，我们为什么要用这些策略呢？
Impulse, procrastination, interpersonal conflicts and lack of perseverance are all strategies used to mask negative emotions. Why do we use them?
摘要：绿色葡萄酒瓶色彩动人，但是除了美观以外，人们为什么要用绿色的酒瓶来装葡萄酒呢？
ABSTRACT: We can all attest to the beauty of a glowing, green wine bottle, but besides aesthetics, what's the purpose of storing wine in green glass?
为什么要用合同，当然是为了保护自己。如果项目中出现错误，你可以明确地在合同中指出你的职责所在。
For protection, of course. If something goes wrong on the project, you will be able to point out in the contract exactly what you are accountable for.
为什么要用合同，当然是为了保护自己。如果项目中出现错误，你可以明确地在合同中指出你的职责所在。
For protection, of course. If something goes wrong on the project, you will be able to point out in the contract exactly what you are accountable for.
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