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| ADJ |
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| /ʌnˈsɜːtn/ |
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| 1 | not clearly known or understood 不确知的；不确定的 |
| The origin of the word is uncertain. 这个词的词源尚不清楚。 |
| it is uncertain whether/why/how etc It is uncertain how they entered the property. 不清楚他们是怎样进入那处私人领地的。 |
| remain uncertain Despite recent research, the precise mechanism of the virus remains uncertain. 尽管最近已作了研究，但该病毒的精确结构仍不得而知。 |
| | 1a | likely to change and become worse 易变的；可能变坏的 | | The economic outlook was beginning to look uncertain. 经济前景开始变得不甚明朗。 | | uncertain future The industry as a whole faces a very uncertain future. 整个行业面临着变幻莫测的未来。 | |
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| 2 | not feeling sure about what to do , whether something is true etc 心中无数的；不能断定的 |
| +about/of I left the meeting feeling anxious, and uncertain about what to do next. 我满心焦虑地离开了会场，不知道下一步该怎么办。 |
| +what/why/how etc Greg was uncertain how to respond to this odd request. 格雷格拿不准怎样答复这个古怪的请求。 |
| | 2a | not confident 没有信心的 | | Sara seemed more self-assured: no longer young and uncertain, but a confident professional woman. 萨拉看起来更加自信了：她不再显得年轻又缺乏信心，而是一个充满自信的职业女性。 | |
| PHRASE |
| - | in no uncertain terms
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| in a way that is clear and definite |
| 非常清楚地；很明确地 |
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| She was told in no uncertain terms that she would have to accept the deal. 她被明确地告知她必须接受这项协议。 |
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| DERIVED WORD |
| uncertainly adv |
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