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BNC: 3532 COCA: 4291
uncertain
adjective /ʌnˈsɜː(r)t(ə)n/
  1. 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。

     Synonyms and related words
    Not known or difficult to know: secret, private, personal...
    1. a.
      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。

       Synonyms and related words
  2. 2
    not feeling sure about what to do, whether something is true etc 心中无数的;不能断定的
    uncertain 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。

    uncertain 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。

     Synonyms and related words
    Uncertain about something: uncertain, unsure, doubtful...
    1. a.
      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。

       Synonyms and related words

derived word

uncertainly

adverb
 Synonyms and related words
Uncertain about something: uncertain, unsure, doubtful...
 Synonyms and related words

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