A sceptical person is doubtful about something.

一个持怀疑态度的人对某事表示怀疑。

We were doubtful about what the government was saying.

我们一直怀疑政府的说法。

I was doubtful about the old man's good intentions.

这个老头的好意令我起疑。

Some economists remain doubtful about whether it's a sound economic policy.

一些经济学家仍然怀疑这是否是一个合理的经济政策。

When he heard this, Oliver felt rather doubtful about having such a friend.

奥利弗听到这儿，对有这样一个朋友感到拿不定主意。

As for myself, I'm doubtful about writing classes, but not entirely against them.

就我本人来说，我对写作课程持怀疑态度，但不完全反对。

Some netizens were not too sure, even doubtful, about the remake of the film.

对于这部电影的翻拍，一些网友不太确定，甚至有些迟疑。

He was doubtful about whether he'd be any good at being someone's dad.

他很怀疑自己能不能胜任做父亲。

'I'm doubtful about it, ' replied Fagin, with a sigh.

“我对此表示怀疑，”费金叹了口气回答道。

So it made me a bit doubtful about breaking the record.

所以让我对破纪录有点怀疑。

She was doubtful about the interview from the off.

【off】她从一开始就对面试心存疑虑。

He is intent on passing the examination , but I am doubtful about his chances.

4.他一心想通过考试，但我对他的机会表示怀疑。

A dubious person lacks a definite opinion or is doubtful about something; this sense of the word is usually used with about.

多疑的人缺乏明确的意见或对某事持怀疑态度；这个词的这个意思通常与about一起使用。

One reason is that, according to findings of a new survey of office workers conducted by Wakefield Research for the IT company Citrix, most bosses are doubtful about remote working.

原因之一是，根据韦克菲尔德研究中心为 IT 公司思杰进行的一项针对办公室职员的新调查结果，大多数老板对远程工作持怀疑态度。

Suppose we are inclined to overestimate our rivals or problems and neglect our ability, we will become hesitant and doubtful about ourselves, unable to fulfill even a simple task.

假如我们习惯于高估我们的竞争对手或者问题，忽视我们自己的能力，我们就会变得犹豫不决、怀疑自己，甚至连一件简单的工作也完不成。

And it was very clear the founding fathers of the United States were very doubtful about the ability of any form of electoral system to function in the long run.

很明显，美国的开国元勋们非常怀疑任何形式的选举制度能否长期发挥作用。

" Justice, " replied Dyson, " is a term of such wide meaning, that I too feel doubtful about giving an answer. But this place is not altogether fit for such a discussion; perhaps you would come to my rooms" ?

“正义，” 戴森回答说， “这个词的含义如此广泛， 以至于我也对给出答案感到怀疑。但这个地方并不完全适合这样的讨论； 也许你会来我的房间” ？