- [not before noun] uncertain (about/of something)
feeling doubt about something; not sure 无把握；犹豫；拿不准 They're both uncertain about what to do. 他们两人都拿不定主意该怎么办。 I'm still uncertain of my feelings for him. 我仍不能肯定我对他的感情。
Express Yourself Expressing certainty or uncertaintyExpressing certainty or uncertainty 表示确定或不确定 When you are stating what has happened or is going to happen, you can say how certain or uncertain you are about what you are saying: 陈述已经或将要发生之事时对自己所言表示确定或不确定： I'm sure/100% certain/absolutely positive I left my keys on the table. 我肯定我把钥匙落在桌子上了。
There's no doubt in my mind that this is the best option. 我心里确信无疑，这是最佳选择。
Without a doubt,/No question, this is where it was. 毫无疑问，它原来就在这里。
I'm not (at all) sure what time they arrive, to be honest. 老实说，我（一点也）拿不准他们什么时候到。
I rather doubt they'll call back. 我有点儿怀疑他们是否会回电话。
Extra ExamplesTopics Doubt, guessing and certaintyb1He seemed strangely uncertain as to how to continue. 很奇怪，他好像不知道该如何继续下去。 His research into the incident has left him uncertain as to exactly where responsibility lay. 对该事件作了调查研究后，他无法确定究竟是谁的责任。 I feel deeply uncertain about the future. 对于未来我深感信心不足。 We were rather uncertain of the direction it came from. 我们都不太确定它是从哪个方向过来的。
Oxford Collocations Dictionaryverbs- be
- feel
- look
- …
- deeply
- very
- rather
- …
- about
- as to
- of
- …
likely to change, especially in a negative or unpleasant way 多变的；难预料的 Extra ExamplesCost estimates are notoriously uncertain in this business. 众所周知，这一行业的成本估算很不明确。 The world is inherently uncertain. 世界在本质上是变幻莫测的。
Oxford Collocations Dictionaryverbs- be
- look
- become
- …
- extremely
- fairly
- very
- …
not definite or decided 不确定的；未决定的 Extra ExamplesWhether diet is an important factor in this illness is still uncertain. 饮食是否是这种病的重要致病因素仍然无法确定。 immigration policies that made employment status uncertain 造成就业状况不确定的移民政策
Oxford Collocations Dictionaryverbs- be
- look
- become
- …
- extremely
- fairly
- very
- …
not confident 信心不足的；迟疑的 Oxford Collocations Dictionaryverbs- be
- feel
- look
- …
- deeply
- very
- rather
- …
- about
- as to
- of
- …
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