It will never be known how and when this numeration ability developed, but it is certain that numeration was well developed by the time humans had formed even semi-permanent settlements.
我们永远也不会知道这种计算能力是何时、如何发展起来的，但可以肯定的是，在人类形成半永久定居点的时候，这种计数法已经发展得很好了。
I assume another reason you were so certain is that—rather famously—you swallowed a bunch of Helicobacter bacteria to prove that it caused stomach problems.
我猜你能这么肯定的另一个原因是——众所周知——你吞下了一堆幽门螺杆菌以证明是它引起了胃病。
It is certain that the Census procedures, which lump the online sales of major traditional retailers like Walmart with "non-store retailers".
可以肯定的是，人口普查程序将沃尔玛等主要传统零售商的在线销售与“非商店零售商”混为一谈。
With the current footprint of humanity, "it seems that global collapse is certain to happen in some form, possibly within a decade, certainly within this century," Johnson said in an email.
约翰逊在一封电子邮件中说，以目前人类的足迹来看，“似乎全球崩溃肯定会以某种形式发生，可能在未来10年内，但肯定在本世纪内。”
It is certain that this monastery which had a grand air both as a church and as a seignory.
可以肯定的是，这座修道院既有教堂的气派，也有修道院的气派。
But, although it is certain that some things will go wrong in Libya, it is far from certain that everything will go wrong.
虽然可以肯定的是在利比亚有些事情会出问题，但是，远远不能确定所有事都会出问题。
I am much less certain that it benefits a person not to feel sadness or agony about the normal losses we all experience in life if the person is not clinically depressed.
但如果没有被确诊为抑郁的话，那我对它能否帮助那些因正常失去- - -我们都会在生活中经历——而感到悲伤和痛苦的人就不是那么肯定了。
I assume another reason you were so certain is that-rather famously-you swallowed a bunch of Helicobacter bacteria to prove that it caused stomach problems.
我猜你能那么肯定的另一个原因是——众所周知——你吞下了大量幽门螺杆菌来证明是它造成了胃部问题。
Certain of it, that is, until I read that blog post!
我一直这样的肯定，直到我看到了这篇博客。
Whichever candidate wins, it is almost certain that he will try to kick-start some type of dialogue with the Turkish Cypriots and end the division on the island.
不论哪个候选人获胜，基本上可以肯定的是，当选人将试图和土族塞浦路斯人开始一些对话，并试图结束塞浦路斯岛的分治局面。
It is because I am sure the UK would never do so that I am certain the euro is not a sane option for that country.
正是因为我相信英国永远都不会承受这一压力，我才可以肯定，欧元对英国而言并非一个明智选择。
This means that there is a chance we would not deliver in the time frame but we are almost certain we could do it.
这表示尽管仍有可能我们不能按时交付，但我们几乎可以肯定我们等做到。
While our understanding of how life began is incomplete, it seems clear that there are certain requirements.
我们并不完全了解生命的起源，似乎可以明确的是，肯定还有某些必要条件。
Whether you agree with the evidence or not, it is certain that there has been a global shift in thinking.
不管你是否同意这个证据，全球正在转变思维这一点是肯定的。
It is far from certain that Mr Mugabe will ever accept such a document, let alone stick to its conditions.
穆加贝会不会接受这样的一份文件现在还不敢肯定，更不用说遵守其中的条件了。
Yet it is certain that for almost every state, such racial problems are taken as a formidable challenge.
但是可以肯定的是，在大多数国家，这样的种族问题是被当做一个艰巨的挑战来处理的。
If your PC is infected then it is almost certain that your existing security product has already let you down.
如果你的PC机感染了病毒，几乎可以肯定现有的杀毒软件已经不管用了。
It is almost certain that they will not be around, at least in their current forms, much longer.
可以肯定的是它们不会维持现状很长时间。
As she put it, it is certain that the painting "is not a Jackson Pollock."
正如她所说，可以肯定的是画“绝对不是杰克逊·波洛克画的”。
Most everyone is certain that Apple will reveal its tablet device tomorrow, but no one involved - from Steve Jobs to the hundreds of likely partners - had explicitly confirmed it. Until now.
差不多每个人都确信明天Apple将会发布它的平板电脑，但是直到现在，没有一个参与其中的人——从史蒂夫·乔布斯到与之合作的数百家商业伙伴——明确地肯定这件事。
It is certain that he will agree with us.
他会同意我们的意见，这是肯定的。
It is certain that we call our family to share the enjoyment for the first day.
我们肯定会打电话给我们的家人一起分享这第一天的快乐。
People often say that friends arepriceless. So it is certain that friendship is very important. The followingare the examples of myself to explain this opinion.
人们常说朋友是无价的。所以友谊肯定是很重要的。以下是我自己的例子来解释这个观点。 大学英语作文。
It is certain that environment influence learning efficiency.
可以肯定的是，环境影响学习效率。
It is certain that they can finish things much easier in this way.
可以肯定的是，这样的话他们可以更容易地把事情完成。
It is certain that they can finish things much easier in this way.
可以肯定的是，这样的话他们可以更容易地把事情完成。
应用推荐