All the time you are in doubt about the cause of your illness, you are fighting against an invisible enemy.

一直以来你都在怀疑自己的病因，你是在和一个无形的敌人斗争。

《柯林斯英汉双解大词典》

I'm rather in doubt about his explanation of this question.

我对他对这个问题的解释相当怀疑。

youdao

Please list two details that make Andrea doubt about the "old lady".

请列举两个让安德莉亚对“老妇人”产生怀疑的细节。

youdao

Last year,several scientists had expressed doubt about the possibility of the large Himalayan glaciers melting in a few decades.

VOA: standard.2010.01.23

Why should doubt about the veridical or truth-affirming possibilities of interpretation be so widespread in the twentieth century?

对确认为真的解读可能性的怀疑,为什么会在20世纪如此普遍？

耶鲁公开课 - 文学理论导论课程节选

Simply because of doubt about the generic integrity of various forms of discourse.

仅仅因为怀疑,不同形式话语的普遍的完整性。

耶鲁公开课 - 文学理论导论课程节选

Citing the scientific consensus that global warming is disturbingly real, Francis left little doubt about who to blame.

CNN: Pope: 'Revolution' needed to fight climate change

"There's no doubt about it, he's putting his back in" to being a politician.

BBC: Romario: From football rebel to politician

So, labor has no doubt about the challenge that lies in the years ahead.

FORBES: Michigan Adopts Right To Work: What Next For Labor?