uncertain

adj

1. ambiguous (especially in the negative)

e.g. she spoke in no uncertain terms

2. not established beyond doubt
still undecided or unknown

e.g. an uncertain future
a manuscript of uncertain origin
plans are still uncertain
changes of great if uncertain consequences
without further evidence his story must remain uncertain

3. lacking or indicating lack of confidence or assurance

e.g. uncertain of his convictions
unsure of himself and his future
moving with uncertain (or unsure) steps
an uncertain smile
touched the ornaments with uncertain fingers

Synonym: unsureincertain

4. not certain to occur
not inevitable

e.g. everything is uncertain about the army
the issue is uncertain

5. not consistent or dependable

e.g. an uncertain recollection of events
a gun with a rather uncertain trigger

6. not established or confirmed

e.g. his doom is as yet unsealed

Synonym: unsealed

7. subject to change

e.g. a changeable climate
the weather is uncertain
unsettled weather with rain and hail and sunshine coming one right after the other

Synonym: changeableunsettled

1. 不确定的；迟疑的；无把握的
If you are uncertain about something, you do not know what you should do, what is going to happen, or what the truth is about something.

e.g. He was uncertain about his brother's intentions...
他拿不准他哥哥的意图是什么。
e.g. They were uncertain of the total value of the transaction...
他们还不确定这笔交易的总价值是多少。

2. 未知的；不明了的；不确定的
If something is uncertain, it is not known or definite.

e.g. How far the republics can give practical help, however, is uncertain...
然而，这些共和国究竟能够提供多少切实可行的帮助还未可知。
e.g. It's uncertain whether they will accept the plan...
还不确定他们是否会接受这一方案。

3. 明确地；毫不含糊地
If you say that someone tells a person something in no uncertain terms, you are emphasizing that they say it strongly and clearly so that there is no doubt about what they mean.

e.g. She told him in no uncertain terms to go away.
她明白无误地叫他离她远远的。

1. 不确定性：概率可以帮助我们理解风险(Risky)和不确定性(uncertain). 风险与不确定性是互有联系的两个概念. 不确定性是指决策者不能肯定某种经济行为一定会发生某种结果,也不知道其发生的概率. 风险是指决策者虽然不能肯定某种经济行为一定会发生某种结果,

2.

2. 想飞：Suggest >暗示 | Uncertain >想飞 | Wave >挥手