Rose was doubtful about the whole idea.

罗斯对整个设想持怀疑态度。

I feel very doubtful about this.

我对这点很怀疑.

I was still very doubtful about the chances for success.

我对能否成功仍然深表怀疑。

You know I had been doubtful about his sharing rooms with you.

你知道,我对他和你住在一起一向不放心.

I must admit I'm still a bit doubtful about this business.

必须承认我对这桩生意还有一些疑问.

Lo is doubtful about the prospect s of amajor Chinese - Russian energy deal.

Lo对中俄之间一项重要的能源交易前景表示担忧.

I am rather doubtful about what they are going to do.

我很怀疑他们准备做的事.

I am doubtful about the value of your proposal.

我怀疑你的提议是否有价值.

Nowadays people tend to question orders, if they are doubtful about them.

现在人们对训令抱有怀疑时,都会问个究竟.

I am doubtful about accepting the job.

我感到怀疑关于接受那份工作.