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uncertain

英[ʌn'sə:tn]美[ʌn'sə:tn]

a.
不确定的，无常的，不确信的，不可预测的

同：	[a.] incertain, unsealed, unsettled, unsure
反：	[a.] certain, sealed, sure

词义辨析

questionable，doubtful，ambigous，uncertain

这些形容词均含“怀疑的，不确定的”之意。
questionable通常指怀疑某行为是否恰当，或指有根有据的怀疑。
doubtful指对某个问题持积极怀疑的，有疑问的态度，强调缺乏确信。
ambigous指因缺乏明确感或因为有各种不同的解释而值得怀疑。
uncertain多指因缺乏证据或了解而捉摸不定，也指因不能预料而不能作出选择。

参考例句

A person of uncertain character.
朝秦暮楚的人。收藏
Now that oil is scarce, the fate of the motor car is uncertain.
既然石油短缺，那么汽车将来会怎样就难以预料了。收藏
Uncertain area or condition between others that are more clearly defined
(介于界限分明的两者之间的)过渡区域,模糊状态收藏
The cause remains uncertain and treatment unsatisfactory.
病因不详，还未找到有效的治疗方法。收藏
Poor quality surveying in some areas makes property boundaries uncertain.
一些地方测绘数据不佳，造成房地产边界不明。收藏

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英英解释

形容词解释：

lacking or indicating lack of confidence or assurance
- 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
[同] incertain, uncertain, unsure
[反] sure, certain
not established beyond doubt; still undecided or unknown
- 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
[反] certain

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