| doubtful | |
| 级别 | 第5级 |
| 音标 | [ ˈdaʊtfl ] |
| 解释 | adj.难以预测的，未定的；怀疑的，可疑的 |
| 英英释义 | If you are doubtful about something, you are uncertain about it |
| 发音 |  |
| 例句 |
1. Let's try to clear up our difficult and doubtful points. 让我们设法把难处和疑点解决一下。 2. Everyone was doubtful at first,but his statement in detail held up. 起初大家都怀疑，但他的详细叙述证明情况属实。 |
