doubtful of

英 美
  • 对 ... 有怀疑； 对 ... 不能确定

doubtful of的用法和样例：

例句

  1. He was doubtful of the outcome.
    他对于结果没有信心。

doubtful of的相关资料：

临近单词

doubtful doubtful failure doubtful account doubtful accounts doubtful silicosis doubtful operation doubtful and false doubtful prognosis doubtful expression doubtful distinction doubtfulcompensation
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