We have to do it this way because that's the way everyone else does it。
我们必须这么做,因为其他人都这么做。
It reminds us that if we are to achieve our goal we have to do it in a down-to earth way.
它提醒我们，如果我们要实现我们的目标我们必须做到地球燃起。
"We have to search 10 million stars for signals and we have to do it over and over," said Dr Drake.
我们不得不在一千万颗星星中搜索信号，我们不得不一遍又一遍地这么做。
If we have to compute a line integral, we have to do it by finding a parameter and setting up everything.
如果我们必须计算线积分，就必须通过寻找一个参数，并建立起一切。
"We essentially measure the distance between two points, but we have to do it very, very well, " Zuber said.
从本质上讲，我们是在测量两点之间的距离，但是我们必须做得非常，非常的准确。”Zuber说。
"I'm not optimistic at all, but we have to do it for Darren," he told his pre-Manchester City press conference.
“我一点不乐观，但我们必须为达伦做点什么，”他在德比战前的记者会说。
If we do, we can beat a lot of opponents but we have to do it in every game and that is the most difficult thing.
只要我们能做到这点，我们就能够击败很多对手。但在每场比赛中都要保持这样，这才是最困难的事。
"We have to discover and produce cleaner, renewable sources of energy," Mr Obama said. "and we have to do it quickly."
“我们必须发掘和生产更清洁和可再生的能源，我们必须迅速行动”奥巴马说。
Since there is no precedent to build such a complex and unique country as China, we have to do it by trial and error.
建设中国这样一个独特而复杂的大国，我们没有现成的套路，只能边试边干。
And especially because the way we have to do it is out of the Middle Ages -- only cash -- and separate from the hotel billing.
特别是我们还得用一种非常老土的方法来做这件事只收现金单独的，不包括在酒店账单内。
We now have an information-modeling mechanism that allows us to characterize what we want to do, rather than how we have to do it.
我们现在有的信息建模的机制允许我们描述想做的事情的特征，而不是如何去做它。
We have to do it ourselves, not rely on others doing it,” explains a woman in national dress wearing white seal boots and trousers.
我们得自己做，而不是依赖于别人。
If we're going to maintain a place in world markets, we have to do it primarily on two fronts: one on quality, and the other on reliability.
如果我们想在世界市场上保有立足之地，我们必须抓住两个方面，一是质量，而是可靠性。
Living in the society, we have many different duties to do. Though it sometime looks irrational or even reverse of Tao, we have to do it carefully.
有些事是我们的责任，虽然它看起来不合理，甚至违背道，可是我们还是得去做、去执行，马虎不得。
We are constantly looking forward opportunities to renew our hope. And new Year's Eve is one of most popular and traditional chances we have to do it.
我们一直希望有机会去恢复我们的希望，而新年前夜就是这样一个好机会，虽然传统但十分流行。
"I want to be part of this club, that was one of my main reasons for coming here," the defender said. "We have to do it in as quick and short a time as possible."
我希望成为俱乐部的一部分，这是我来这儿的主要原因，我们必须尽快重整旗鼓。
And I think that we have to do it as quickly as possible, because it's been acknowledged by the commanders on the ground the situation is getting worse, not better.
我认为我们还得尽快做这件事情，因为战场上的指挥官们承认局势正在恶化，而不是变好。
Although the causes of cancer are being uncovered, we do not yet have any practical way to prevent it.
尽管癌症的病因正被揭开，但我们还没有任何预防它的有效的方法。
There's nothing we can do about it. We'll just have to grin and bear it.
对此我们无能为力，只好默默地忍受。
Do we have to go to the party? I really don't feel up to it.
我们是不是一定得去参加这次聚会？我实在没有精力应付了。
I find it impossible to go to bed early in school days, since we have so much homework to do.
我发现在上学的日子里想要早睡是不可能的，因为我们有太多作业要做。
We didn't have much money but it didn't matter, and there was plenty of opportunity to do whatever you felt like doing.
我们并不富有，但这并不重要，你有很多机会去做你想做的事情。
"It was luckily in good shape," says Kapsalis, "and we just have to do some minor things in order to be able to unfold it."
“幸运的是，它的状况良好，”卡普萨里斯说，“我们只需要做一些小事情就可以把它展开。”
"It was luckily in good shape," says Kapsalis, "and we just have to do some minor things in order to be able to unfold it".
“幸运的是，它的状态很好，”卡普萨里斯说，“我们只需要做一些小事情就可以把它展开。“
Even though we have the technology to track, capture, protect, and breed endangered animals, that doesn't imply that we should actually do it.
尽管我们拥有追踪、捕获、保护和繁殖濒危动物的技术，但并不意味着我们真的应该这么做。
Just imagine! We have to finish reading 300 pages before Monday! How can the professor expect us to do it in such a short time?
想象一下！我们必须在星期一之前读完300页！教授怎么可以认为我们能在这么短的时间内做完呢？
Just imagine! We have to finish reading 300 pages before Monday! How can the professor expect us to do it in such a short time?
想象一下！我们必须在星期一之前读完300页！教授怎么可以认为我们能在这么短的时间内做完呢？
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