"Doubtful" 的用法和例句 ... A: I am doubtful of his ability to pass the test. ... A: doubtful: 疑问, usua...

be doubtful of的用法和樣例：. 例句. He was under suspicion of theft. 他被懷疑有偷竊行為。 I'm doubtful whether ... ...

LINE it! ... 例句與用法：. The ethics of his decision are doubtful. 他的這一決定是否合乎道德規範值得懷疑。 It is doubtful ...

比如：「be sceptical about something（對某事半信半疑）」；「remain sceptical（將信將疑）」。來通過下面的兩個例句，鞏固對「sceptical」 的用法...

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"doubtful" 例句. The player was doubtful of the judge's call. It is doubtful that anyone can accura...