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。

youdao

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。

youdao

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？

youdao

It's perfectly inscrutable as far as I'm concerned. But I think I can say with absolute certainty that one of its possible significances cannot be that the unprofitable servant should have waited to make his investment.

这对我来说很神秘，但我可以说,我很确信,它可能的含义之一,不会是让那个无益的仆人去等。

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It is impossible to say with certainty why justice was never done in Ms. Zhu's case.

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No doctor interviewed for this story was willing to say with certainty that Natrecor was dangerous.

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"Some of the skills required to operate were impaired in the study, but it is difficult to say with certainty how this would translate into real clinical performance, " she says.

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