While it is still not possible to say with certainty that this is caused by human beings burning fossil fuels, it is undeniable that catastrophic changes are going on in the climate system.
虽然我们还不能肯定地说这是由于人类燃烧矿物燃料引起的，但是不可否认，气候系统正在发生灾难性变化。
All these events will be influenced to some degree by global temperatures, but it's impossible to say with certainty that any of them would not have happened in the absence of man-made global warming.
所有这些事件都将受到全球气温一定程度的影响，但是不能十分肯定地说，其中任何之一不会发生在没有人为全球变暖的情形里。
I don't know how long records have been kept, but even if we can go back 500 yrs is that enough time given how old the earth is to say with any certainty?
我不知道目前有多长的记录。但是连地球的年龄至今都没有确切的结论，即便我们可以追溯到500年前的地震记录，它们是不是足以说明问题呢？
Having lived through it, I can now say this to you with a bit more certainty than when death was a useful but purely intellectual concept.
从死亡线上又活了过来，我可以比以前把死亡只当成一种想象中的概念的时候，更肯定一点地对你们说。
I can say with 100% certainty as a parent that in the Moore household this will lead to less work.
作为家长，我能百分之百肯定，家中工作的人会变少。
I cannot say with certainty which of my motives are the strongest, but I know which of them deserve to be followed.
我不能肯定地说我的哪一种动机最强，但我知道哪一个目标我必须遵循。
I can say with certainty that he is a fair man who has no axe to grind over this matter.
我可以肯定地说，他在这个问题上是一个没有个人打算的好人。
It's too soon to say with any certainty, of course, but it is safe to assume that Redick will be among them.
当然，现在就肯定谁出局似乎为时过早，但要说雷迪克是其中之一应该是桌面上的事。
Indeed, it would be difficult to find anyone in modern Britain who could say with certainty that his ancestors had not come to the British Isles from somewhere else.
事实上，你很难找到一个现代的英国人，他能很肯定的说自己的祖先不是从其他地方来到不列颠岛的。
Actually we can say with certainty that must not, this time, or want to take out the first two years, slow and motivation, accumulation has just started.
其实可以肯定地说，一定不是，这个时候，还是要拿出前两年的干劲来，稳扎稳打，积累才刚刚开始。
"You are so lucky, you have no discipline, easy school, and freedom, " the Xia Xi girls would say with certainty and envy. "All we get to do is study. "
“你可真幸运。你不需要遵守什么规矩，学业轻松，还自由，”夏溪的女孩们会如此笃定而又嫉妒地说。“我们呢，只能学习，没别的。”
Having lived through it, I can now say this to you with a bit more certainty than when death was a useful but purely intellectual concept: no one wants to die.
经历此事后，我可以比之前死亡只是抽象概念时要更肯定告诉你们下面这些：没有人想死。
Having lived through it, I can now say this to you with a bit more certainty than when death was a useful but purely intellectual concept: no one wants to die.
经历此事后，我可以比之前死亡只是抽象概念时要更肯定告诉你们下面这些：没有人想死。
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