skeptical (US) adjective
or British sceptical /ˈskɛptɪkəl/ or British sceptical /ˈskɛptɪkəl/ Learner's definition of SKEPTICAL
[more skeptical; most skeptical]
: having or expressing doubt about something (such as a claim or statement)持怀疑态度的；不相信的 -
She's highly skeptical of/about the researchers' claims.她对研究人员的断言表示高度怀疑。
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I'm skeptical that he can win. [=I doubt he can win]我对他能取胜表示怀疑。
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He says he can win, but I remain skeptical.他说他会赢，不过我依然表示怀疑。
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When I said I'd finished my homework early, Mom looked skeptical.我说我已经完成作业了，妈妈露出怀疑的表情。
— skeptically
(US) or British sceptically /ˈskɛptɪkli/ adverb