be doubtful of中文,be doubtful of的意思,be doubtful of翻译及用法 2026-11-08 18:22 浏览次数 42 be doubtful of英[bi: ˈdautful ɔv]美[bi ˈdaʊtfəl ʌv]怀疑;对…感到疑惑