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| ADJ |
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| /ˈdaʊtfl/ |
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| 1 | not usually before noun not certain or likely to happen or be true 不确定的；未定的 |
| Already the whole project was looking doubtful. 整个项目的前景已显得难以预料。 |
| it is doubtful (that)/whether/if/how It is doubtful whether he will survive. 还不能确定他能否生还。 |
| | 1a | unlikely to be doing something , especially playing in a match （尤指参加比赛）不大可能的 | | Kirkwood is doubtful for tonight’ s match. 柯克伍德不大可能参加今晚的比赛。 | |
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| 2 | not usually before noun not feeling certain about something 怀疑的；疑惑的 |
| You still seem a bit doubtful. 你似乎还有点疑惑。 |
| +about He was doubtful about the accuracy of the results. 他怀疑这些数据的精确性。 |
| +(that)/whether/if The board was doubtful that her estimates were realistic. 委员会对她的估计是否合乎实际存有怀疑。 |
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| 3 | usually before noun not satisfactory or acceptable 不太好的；不合意的；可疑的 |
| documents of doubtful authenticity 真实性可疑的文件 |
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| DERIVED WORD |
| doubtfully adv |
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