The reason why the injection needs repeating every year is that the virus changes.
每年需要重新注射的原因是这病毒经常变化。
The reason why I write this letter to you is that I have a problem in respect of the writing style.
我写这封信的原因是我有一个关于写作风格的问题。
That is one reason why America absorbs immigrants better than many other rich countries, according to a new study by the University of California.
根据加州大学的一项新研究，这是美国比其他许多富裕国家更好地吸收移民的原因之一。
The most basic reason why dialects should be preserved is that language helps to retain a culture.
方言应该被保留的最基本的原因是语言有助于保留文化。
The reason why these people feel less satisfied is that a world of possibilities may also be a world of missed opportunities.
这些人感到不那么满意的原因是，一个充满可能性的世界也可能是一个充斥着错失的机会的世界。
Now, don't ask me why, because I really have no idea, but the fact is that customers tend to respond really well to MBWA, which is the key reason for its success.
现在，不要问我为什么，因为我真的不知道，但事实是，客户往往对MBWA反应很好，这是它成功的关键原因。
Another reason why the author feels that moving from traditional gasoline to corn ethanol is a good idea is because they are more environmentally friendly than fossil fuels.
作者认为从传统的汽油转向玉米乙醇是一个好主意的另一个原因是，它比化石燃料更环保。
Although most people, I believe, would wish to preserve this art, I'm afraid that tourism is another reason why the art is disappearing.
虽然我相信大多数人都希望保护这种艺术，但恐怕旅游业是导致这种艺术消失的另一个原因。
The reason why many seeds require a period of stratification is to guarantee that the seeds grow after and not before unfavorable weather.
许多种子需要一段时间分层的原因是为了保证种子在恶劣的天气来临之后而不是之前生长。
The reason why we should learn foreign languages is that they have become a vehicle for bringing in advanced ideas, science and technology.
我们之所以要学习外语，是因为它们已成为引进先进思想和科学技术的媒介。
The study's finding strongly suggests that the real reason why scientists over forty rarely produce highly creative work is not due to age but rather because most have spent too long in their fields.
这项研究的发现有力地表明，40岁以上的科学家很少能做出高度创造性的工作的真正原因不是年龄，而是因为大多数人在他们的领域花了太长时间。
The very reason that clichés so easily seep into our speech and writing—their insidious memorability—is exactly why they played such an important role in oral storytelling.
陈词滥调之所以如此容易渗透到我们的演讲和写作中，是由于它们潜在的可记忆性，这正是它们在口述故事中扮演如此重要角色的原因。
That is the reason why it is so special!
这就是它如此特别的原因！
The reason why I gave up is that I could not see the place which I was going to reach completely.
我放弃的原因是我完全看不到将要到达的地方。
That is, if you see a law on the books, well, the reason why that law is on the books is because not everyone would behave according to the specifications of the law.
也就是说，如果你看到书本上有哪条法律，那么为什么书本上存在这样的法律呢，原因在于不是每个人的行为都符合法律规范。
That is one reason why the carmakers assembled in Frankfurt believe that the normal strong, cyclical rebound may not happen this time. There are plenty of others.
这也是为什么汽车制造商们选择在法兰克福碰头，虽然他们相信以往周期性的强势反弹今年将不会发生。
But we don't think that is the main reason why they ended up going to university and securing good jobs.
但是我们认为这不是他们最终能进入大学并找到好工作的主要原因。
There is no convincing evidence that social condition - ing, the fact that girls' mothers talked to them more, is the reason why girls talk more than boys.
社会条件，就是说女孩子的妈妈们通常和女孩子谈话多，才决定女孩长大后比男的讲话多。可是对此还没有让人信服的研究证据。
And that is the main reason why Pakistan’s long misrule has not caused worse tumult.
这也是为什么巴基斯坦统治通知不妥却没造成更加恶劣纷乱局面的主要原因。
That is the main reason why I have decided to set up a School of Public Policy at the Central European University in Budapest.
这就是我在布达佩斯的中欧大学设立公共政策学院的主要原因。
That is the main reason why a fast rate of catch-up by the emerging markets would be better for the West than a faltering one.
这是为什么对于西方而言，新兴市场的追赶速度越快越好的一大主要原因。
That is the reason why Android tablets that do have the Market are in fact, technically, phones.
这就是为什么从技术上讲，那些能够联入Android市场的平板电脑，本质上还是一部手机。
That is the reason why Mervyn King, the Bank of England's governor, referred in a speech earlier this month to the practice of excluding price categories as "highly misleading".
这就是为何英格兰银行(Bankof England)行长默文•金(Mervyn King)在本月初的演讲中提到排除一些价格种类的做法产生了很大的误导。
I have never thought of writing for reputation and honour. What I have in my heart must come out; that is the reason why I compose. — Ludwing Van Beethoven.
我从来没想过要为出名和荣耀而作曲。我内心的东西一定要冒出来，那就是我要谱曲的原因。——路德维希·凡·贝多芬。
Precious things are very few in this world, that is the reason why there is just one you.
世界上珍贵的东西是很少的，这也就是为么只有一个你的原因。
That is the reason why the mass media creates all those shocking, terrifying stories about my country.
那也正是为什么大众媒体们要编造那些关于我国令人震惊、恐惧的故事的原因了。
We cannot see what we really are, that is the reason why it is so easy to form wrong and distorted self-image of ourselves.
我们看不见真实的自己，这是为什么形成错误的扭曲的自我形象是如此而已容易。
Very often we are reluctant to accept new thoughts, new ideas, new concepts, new knowledge, and new methods. That is the reason why we cannot upgrade ourselves.
我们常常会拒绝接受“新思想、新思维、新观念、新知识、新方法”，这就是我们不能进步的原因。
That is the reason why the Second Restatement absorbed and reserved many parts of the First Restatement .
第二次冲突法重述》对《第一次冲突法重述》的合理吸收和保留可从侧面验证这一结论。
And that is the reason why you are lying here. Because you know nothing about me, Captain Hirako.
这就是你为什么会躺在这里的理由，因为你根本就不了解我，平子队长。
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