形容词
中文翻译：半信半疑的
同义词：
['doubtful', 'uncertain', 'skeptical']
例句：
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1. He is a man of doubtful character.
他是个性格可疑的人。
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2. The outcome of the election remains uncertain.
选举的结果仍然不确定。
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3. She was doubtful about his ability to complete the task.
她对他完成这项任务的能力持怀疑态度。