最糟糕的是，我甚至不能确定他们是否收到了我的信。
The worst of it is that I can't even be sure if they received my letter.
他以前从未讲过课，他甚至不能确定自己是否应当从事教学。
He'd never been in a class before and he was not even sure that he should have been teaching.
他不能确定自己理解是否正确，尽管该理论的逻辑推理引起了他的兴趣。
He wasn't sure he'd got it right, although the theory attracted him by its logic.
即使到现在，我们也不能确定这些激进分子不会找到某个新的借口在下一年冬天号召一场罢工。
Even now we could not be sure that the militants would not find some new excuse to call a strike the following winter.
尽管我们不能确定，然而它似乎是生命力极强的物种。
However, it seems, though we can't be sure, that it's very good at persisting as a population.
我的导师建议我学经济和会计，但我还真不能确定（学哪个）。
My advisor suggested economics and accounting, but I am not really sure.
她不知道他何时要走，甚至于还不能确定他究竟要不要走。
She couldn't know what time he'd go, or even for certain that he'd go at all.
一般来说，还不能确定幼儿能否辨别广告中的幻想成分和现实成分。
Generally, there is uncertainty as to whether very young children can distinguish between fantasy and reality in advertising.
因此，直到最近发现蜥脚类恐龙筑巢地的化石之前，科学家们还不能确定蜥脚类动物到底是产卵还是胎生。
Until the recent discovery of fossilized sauropod nesting grounds, scientists were thus uncertain whether sauropods laid eggs or gave birth to live young.
我不能确定为什么我开始攀登。
我不能确定，这需要出现在会谈开始时。
I'm not sure that's something that needs to be at the beginning of the conversation.
我不能确定金诺克的发言是否是正式宣布。
I'm not sure I would characterise it [Kinnock's remarks] as an announcement.
你不能确定它是好是坏，所以不愿去尝试。
If you're not sure if it's a good idea or not, you are reluctant to try it out.
但是他还不能确定公众会怎么想。
DWB不能确定JAR文件的位置和类路径。
DWB is not able to determine the location and classpath of where the JAR files were created.
但是金还不能确定，发育漂变是否也出现在人类身上。
Prof Kim cannot yet say whether developmental drift occurs in humans.
对于萤火虫如何调节光的亮与息，科学家们尚不能确定。
Scientists are not sure how the insects regulate this process to turn their lights on and off.
科学家尚不能确定火山喷发时闪电的形成原因。
Scientists are still uncertain as to why lightning occurs during some eruptions.
同时，玻利维亚完全还不能确定它是否需要国有石油公司。
Bolivia, meanwhile, cannot decide whether it wants an NOC at all.
能否绕开破产法庭而达到这一切，仍然不能确定。
Whether this can be achieved outside bankruptcy court is doubtful.
解析器不能确定元素是如何使用的，除非它知道元素的范围。
The parser can't determine how an element is used unless it knows the element's scope.
写这项研究的作者是这样想的，我不能确定我同意这个观点。
Well, the authors who wrote up this study seem to think so, but I'm not sure I agree with them.
死亡的原因“还不能确定”，办公室里的另一名验尸官说到。
The cause of death was "yet to be ascertained," said another official in the coroner's office.
死亡的原因“还不能确定”，办公室里的另一名验尸官说到。
"The cause of death was" yet to be ascertained, "said another official in the coroner's office."
然而，专家们也不能确定多少流感病毒能让人感染。
However, experts are uncertain as to what constitutes an infective dose when it comes to influenza viruses.
当代码难于理解，并且团队不能确定它做什么的时候进行重构。
Refactor when the code is difficult to understand and the team is not sure of what it does.
我们并不能确定假设正确与否，但进一步的研究能回答这个问题。
We do not know that it is true, but we can test this hypothesis with further experience.
如果他参选的话，我觉得他的结果将是有始无终，但是我不能确定。
If he entered the race, I thought his boom would play itself out, but I couldn't be sure.
最后，这只是我个人的猜测，还不能确定，如果猜中了将意义深远。
Finally, the prediction that I am least sure of, but which, if prescient, would be the most profound.
最后，这只是我个人的猜测，还不能确定，如果猜中了将意义深远。
Finally, the prediction that I am least sure of, but which, if prescient, would be the most profound.
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