1. | 拿不定主意；不确定；怀疑not sure; uncertain and feeling doubt |
Rose was doubtful about the whole idea. 罗斯对整个设想持怀疑态度。 | |
He was doubtful about accepting extra work. 他拿不定主意是否接受额外工作。 |
2. | 未必；难说；不大可能unlikely; not probable |
It's doubtful if this painting is a Picasso. 这未必就是毕加索的画。 | |
With her injuries it's doubtful that she'll ever walk again. 她多处受伤，今后能否行走还很难说。 | |
It's doubtful whether the car will last another year. 这辆汽车未必还能用上一年。 | |
He is injured and is doubtful for the game tomorrow(= unlikely to play) . 他受了伤，明天未必能参赛。 |
3. | [nubn] 不明朗；悬而未定；可能变糟uncertain and likely to get worse |
At the beginning of the war things were looking very doubtful. 战争刚开始时，形势看上去很不明朗。 |
4. | [obn] 低劣的；未必是真的；靠不住的of low value; probably not genuine or of a quality that you can rely on |
This wine is of doubtful quality. 这酒的质量有问题。 |
