doubting

动词 doubt:

1. consider unlikely or have doubts about
   同义词：doubt
2. lack confidence in or have doubts about
   同义词：doubt

形容词 doubting:

1. marked by or given to doubt
   同义词：questioning, skeptical, sceptical

1. He doubts if the officer is anybody.
   他怀疑这官员是个要人。
2. I doubt the truth of it.
   我怀疑此事的真实程度。
3. There is no doubt that we will be successful.
   毫无疑问我们会成功的。
4. There is no doubt about it.
   那是毫无疑问的。