The plain fact is that nobody really knows.
事实很明显，没有人真正了解。
Nobody really knows how big Lagos is.
没有人真的知道拉各斯有多大。
The truth is, though acupuncture is at least 2,200 years old, nobody really knows what's happening.
事实是，尽管针灸有至少2200年的历史，但没有人真正了解针灸。
没有人真正的知道。
Nobody really knows who is at fault.
没有人真正知道谁错了。
没有人真正了解原因。
Nobody really knows whether it works or not.
它是不是真的有效，没有人真正知道。
Whether it works or not, nobody really knows.
它是不是真的有效，没有人真正知道。
But nobody really knows, and nobody wants to know.
但是，没有人真正知道这些，也没有人想知道这些。
Nobody really knows how to make that extrapolation.
没有人真正知道如何推算。
And of course, on Wall Street, nobody really knows.
当然，在华尔街，没有人确切地知道答案。
Nobody really knows how big the carry trade is.
套息交易的规模到底有多大无人知晓。
And nobody really knows what it is or why it's there.
没有人真正知道它是什么，或是它为什么存在？
Nobody really knows what's on Bank of America's balance sheet.
没有人真正知道什么是对美国银行的资产负债表。
Nobody really knows how long it was or what route it followed.
没有人真正知道长城有多长，没人知道它是沿着什么路线来修的。
Does he need an operation? Nobody really knows, we'll wait and see.
没有人知道他是否需要做手术，我们还得看情况。
"Nobody really knows how this will work," says Kieren McCarthy, who runs.
没有人真正了解这会是如何运作的。
"Nobody really knows why dolphins have the impact that they do," she says.
“没有人真正知道为什么海豚会有那样的影响力，”她说。
But nobody really knows, and time is running out to prepare a census in 2011.
但是没有人真的知道，没有多少时间去准备2011年的人口普查。
As for the larger question of why yawns are catching, nobody really knows.
至于那个更深的问题，为什么打哈欠是传染的，还没有答案呢。
That figure, of course, is just an estimate-nobody really knows exactly how many.
当然，那个数字只是估计，没人确切知道准确的数量。
Nobody really knows the size of the diaspora (estimates in Europe range from 7m to 12m).
没有人知道散居民族的规模有多大(在欧洲，估计有700万到1200万人)。
It may have all begun with a fistful of dirt, but nobody really knows where it might end.
所有人都知道这一切只是从那一抔土的故事开始的，但没有谁能真正的了解故事将会在哪里结束。
Nobody really knows how interested insurgent leaders are in the idea (they are probably divided).
现在没人真的知道叛军领导人对这个想法还有多大兴趣（或许他们内部也有分歧）。
Few African countries have a cancer registry, so nobody really knows the rates of various cancers.
非洲少有国家对癌症进行登记，因此没人知道真正各种癌症的发病率是怎样的。
Few African countries have a cancer registry, so nobody really knows the rates of various cancers.
非洲少有国家对癌症进行登记，因此没人知道真正各种癌症的发病率是怎样的。
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