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uncertain
★
★
adjective 
/ʌnˈsɜː(r)t(ə)n/
/ʌnˈsɜː(r)t(ə)n/ - 1not 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 wordsNot known or difficult to know: secret, private, personal...- 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 wordsAble to be changed and lasting only a short time: variable, brief, short-term...
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- 2not 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 wordsUncertain about something: uncertain, unsure, doubtful...- 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 wordsNot confident or shy and easily embarrassed: shy, uncertain, retiring...
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phrases
derived word
uncertainly
adverb Synonyms and related words
Uncertain about something: uncertain, unsure, doubtful...
Synonyms and related words
Not confident or shy and easily embarrassed: shy, uncertain, retiring...
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