certainty /ˈsɚtn̩ti/ noun plural certainties
plural certainties
Learner's definition of CERTAINTY
1
[noncount] : the state of being or feeling certain about something确信；确实；确定性 -
Scientists still do not know with any degree of certainty why the disease spread so quickly.科学家们仍无法确定这种疾病迅速传播的原因。
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We cannot predict the outcome with absolute/any certainty.我们无法绝对准确地预测结果。
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There was no certainty that the package would arrive in time.不敢肯定包裹是否会及时送到。
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Her certainty about these complex moral issues is surprising.她对这些复杂的道德问题这么有把握，真令人吃惊。
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It is difficult to say with certainty [=in a certain or definite way] which of the plays was written first.这些剧本哪一部是最先写的，很难有定论。
2
[count] : something that is certain : a fact about which there is no doubt确定的事；必然的事 -
We live in a world without certainties. [=a world in which things are not certain]我们生活在一个不确定的世界里。
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His victory in the election is almost a certainty. [=it is nearly certain/definite that he will win the election]他在选举中胜出几乎已成定局。