Nobody knows for sure whether the theory is true or not, but it's a fact that bees are disappearing in very large numbers.
没有人确切地知道这个理论是否正确，但事实是蜜蜂正在大量消失。
"Nobody knows for sure and certain," said Martha.
“没有人确切知道。”玛莎说。
没人确切地知道。
"The problem is, nobody knows for sure what is going on," he said.
“问题是，没有人确切的知道将发生什么，”他说。
Nobody knows for sure where the paper form is at any given time, and who last worked on it.
在一个特定的时间点，没有人知道纸质表单在哪，也不知道是谁对它执行最近一次的处理。
Nobody knows for sure why and how dinosaurs disappeared from the earth in such a short time.
没有人知道恐龙为什么和怎样在这么短的时间里从地球消失的。
Nobody knows for sure ________________ dinosaurs disappeared from the earth in such a short time.
没有人确切地知道恐龙是由于什么原因，又是怎样在这么短的时间里从地球上消失的。
Bogus clicks are thought to account for around10% of all click traffic, though nobody knows for sure.
虽然有人认为虚假点击大概占全部点击量的10%但这一数字并不确切。
Nobody knows for sure, but most of the answers seem to point to human-caused global atmospheric change.
没有人知道确切的答案，不过，大部分答案似乎都指向人类引起的全球大气变化。
Bogus clicks are thought to account for around 10% of all click traffic, though nobody knows for sure.
虽然有人认为虚假点击大概占全部点击量的10%，但这一数字并不确切。
Since we are stuck inside, and since opaque dust truncates our view in visible light, nobody knows for sure.
由于我们坚持内，因为不透明的尘埃截断我们认为，在可见光，谁也不知道是肯定的。
I have, little by little, created a fog around me and my life. And now nobody knows for sure who I am or what I do.
我已经一点一点地在我以及我生命的周围创造了一层雾，现在没有人确切知道我是谁、是什么样的人。
NOBODY knows for sure what Jane Austen looked like, which is causing some of her admirers a degree of anxiety these days.
没有人确切的知道简。奥斯汀的长相究竟如何，这导致了这些天来她的一些崇拜者的一定程度的焦虑。
Nobody knows for sure why humans lie so much, but studies find that it's common, and that it's often tied to deep psychological factors.
没有人确切的知道为什么人类撒谎如此频繁，但是研究发现这种现象很平常，并且这种行为通常与深层的心理因素有关。
One theory is that they are youngsters, giving off heat as they collapse inward due to the pull of their own gravity, but nobody knows for sure.
有一个说法是，它们还处于幼年，由于自己的重力所拉，在衰竭的同时发出热量，但没有人能肯定这种说法。
Nobody knows for sure what might trigger it, but preventing a global temperature increase of more than 2 degrees Celsius is considered essential.
没有人确切知道哪些因素可能触发它，但防止全球气温上升超过2摄氏度被认为至关重要。
Nobody knows for sure, but it's believed that some dogs and cats chew grass when they feel nauseous. Others may do it out of boredom or they may just like it.
没有人知道到底为什么猫和狗吃草，但是据信一些猫和狗在想呕吐的时候会去吃草，还有一些可能是因为为了解乏，或者是仅仅是喜欢而已，吃草没有害处，不需要恐吓它们。
Nobody knows for sure what's going to happen over the next year or so, but the least that's going to happen is that things are going to get shaken up but good.
没人确切地知道明年左右会发生什么，但至少知道形势将要发生巨大变化。
What do global warming deniers think about this? Clearly pollution is bad. No matter what you think is going to happen (and nobody knows for sure) it is going to be bad for humans.
那些全球变暖的否认者会怎么想这事？很明显污染不是好事。不论你怎么想，污染对人类没有好处。
Nobody knows for sure how much will be raised by a renewed clampdown on tax evasion or the umpteenth fiscal amnesty declared by a Berlusconi cabinet (this time for previously undeclared property).
Berlusconi的一位内阁称，通过对偷税的新一轮的打击和第无数次的财政特赦，没有人能够确切的知道将会提高多少。
The meeting will be held in September, but nobody knows the date for sure.
会议将在九月举行，但没人知道确切的日期。
A robot show will be held in July, but nobody knows the date for sure.
机器人展将在7月举行，但没人知道确切的日期。
We will wait for the team news to be sure that Van Persie won't play. Apart from the coach of Arsenal, nobody knows who will play.
我们会等待范佩西是否会上场的消息。除了阿森纳的教练，没人知道谁会上场。
Nobody knows for certain what caused the disaster for sure, therefore there's no way of preventing it from happening again, on the same rail road or on other lines around the country.
没有人确切地知道到底是什么造成的灾难是肯定的，所以没有办法防止它再次发生在同一轨道路或其他线全国各地。
Nobody knows for certain what caused the disaster for sure, therefore there's no way of preventing it from happening again, on the same rail road or on other lines around the country.
没有人确切地知道到底是什么造成的灾难是肯定的，所以没有办法防止它再次发生在同一轨道路或其他线全国各地。
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