doubtful of

基本解释

I don't think we were ever doubtful of the success of this event today, a government spokesman told reporters.
一名政府发言人在接受记者采访时说：“我们从没怀疑今天的活动能取得成功。
And if you do take one, you'll probably make the shop assistants feel unease, they might be doubtful of your intentions.
倘若你自己带着拎包进店，反倒会使店家觉得不踏实，没准会怀疑你是扒手呢！
I was doubtful of the merits of such restrictions, but then this may have been the only way to cut off the power demand for money.
我当时对他的约束办法有怀疑，但也认为可能是斩断权力借贷的唯一办法。

"Well they certainly will be doubtful of it unless President Obama makes a strong argument.
But some are doubtful the reforms will work. Boston University School of Law professor Cornelius Hurley.

Even as Haitians have been outraged by Minustah's wrongdoing, they have become increasingly doubtful of the benefits it provides.
ECONOMIST: The UN in Haiti
The driver, doubtful of the whole affair, stood by while the father and son lifted Nawab and the motorcycle thief into the back.
NEWYORKER: Nawabdin Electrician