doubtfulKK [ˋdaʊtfəl] /ˈdaʊtfəl/发音形容词1怀疑的、不确定的、没把握的She looked doubtful when I explained my plan to her.我向她说明计划时,她一脸怀疑。2难说的、不太可能的、未定的It is doubtful whether the team can finish the project on time.这个团队能否如期完成专案还很难说。3可疑的、有问题的The painting turned out to be of doubtful origin.那幅画的来源后来证明相当可疑。4不可靠的、堪忧的The company sells cheap tools of doubtful quality.那家公司卖的廉价工具品质堪忧。用这个字练口说→