The pyramids of Egypt were built more than three thousand years ago, and no one knows how.
埃及金字塔是3000多年前建造的，而且没有人知道是怎么建造的。
No one knows how new spin-off technology from the International Space Station will help us in the future.
没有人知道来自国际空间站的新的衍生技术未来会如何造福人类。
Surprisingly, no one knows how many children receive education in English hospitals, still less the content or quality of that education.
令人惊讶的是，没有人知道有多少孩子在英国医院接受教育，更不用说教育的内容和质量了。
One thing is for sure, if or when the U.K. leaves the EU, it will erect new logistical and economic barriers, and no one knows how divisive they will be.
有一件事是肯定的，如果或当英国离开欧盟时，英国将会建立新的物流和经济障碍，没有人知道这些障碍会造成多大的分歧。
We've tried this method for no one knows how many times.
这种方法我们已不知试了多少次。
NO one knows how the fire started.
没有人知道是怎样起火的。
No one knows how to price cloud computing.
没人知道如何为云计算定价。
No one knows how often cases like Mr. Xu's occur.
没人知道像徐这样的事例是否经常发生。
No one knows how many Burmese live in Yunnan.
谁也不知道到底有多少缅甸人生活在云南。
No one knows how Wilson got necrotizing fasciitis.
没有人知道Wilson如何染上坏死性筋膜炎。
No one knows how cats and people became friends.
没有人知道，猫和人是怎样成为朋友的。
But then no one knows how to win the next election.
然而没人知道如何在大选中获胜。
No one knows how many militants still lurk in the creeks.
没有人确切地了解现在还有多少武装分子游荡、隐匿在河谷水涧。
And no one knows how little it takes to trigger that clotting.
而且没人知道多小的原因就能导致血液结块。
No one knows how many ethnic Chinese there are in Indonesia.
没有人确切地知道印度尼西亚到底有多少华人。
At this stage no one knows how she died. She died alone in bed.
目前并没有人知道她的死因，当时她正一个人躺早床上。
No one knows how long this growth process takes, but it may go on for years.
没人知道这个过程究竟有多长，但可能会持续几年。
But no one knows how to do it, so everyone is really friendly all the time.
但没有人知道如何做，所以每个人都一直很友善。
But no one knows how many of them have moved in only for as long as the work lasts.
但没有人知道，其中有多少工人一完工就会搬走。
No one knows how many others have gone to the court on their own or with other lawyers.
没人知道有多少人曾经自己去过法院或和其他律师去过。
The trouble with this conclusion is that no one knows how much water people can safely use.
不过这种结论的麻烦是，没人知道可供人类使用的安全水量究竟有多少。
Most programmers work on problems on their own, so no one knows how good (or bad) they really are.
大多数程序员会解决他们自己的问题，因此没有人知道他们有多棒(或者有多糟糕)。
No one knows how neutrinos could interact with radioactive materials to change their rate of decay.
没人知道中微子中微子是如何同放射性材料发生作用并改变他们的衰变速率的。
No one knows how disciplined the Kenyans will be, nor how the Somalis will react to their presence.
没有人知晓它会怎么出牌，也没有人知道索马里会对它们的出现作何反应。
That could change: no one knows how long the crisis will linger, or how bad the damage will be.
这一点可能会改变，没人知道这次危机会持续多久，也没人知道损失会有多严重。
The gas is burning till now, no one knows how many cubic meters of the resource has been burnt.
时至今日，坑洞内依旧燃烧着熊熊火焰，无人知晓几十年中究竟有多少天然气资源由此浪费。
Until now, though, such genes have been discovered piecemeal, so no one knows how many there are.
直到现在，只是零星地发现这类基因，因此这些基因的数量仍旧是未知数。
US Airways pilots can drill for water landings in a simulator, but no one knows how realistic that is.
美国航空公司的飞行员在模拟器上训练过水面降落，但没有人知道实际情形是怎样。
Time machines are commonly seen in science fiction films and books, but no one knows how to build one.
时间机器在科幻电影和书籍中经常见到，但是没有人知道怎样制造出一台。
Time machines are commonly seen in science fiction films and books, but no one knows how to build one.
时间机器在科幻电影和书籍中经常见到，但是没有人知道怎样制造出一台。
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