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》

There is little doubt that man has had an impact on the Earth's climate.

毫无疑问人类对地球上的气候造成了影响。

《柯林斯英汉双解大词典》

No doubt, but I have an uneasy feeling at times that she looks upon the children as puppies.

毫无疑问，但有时我有一种不安的感觉，她把孩子们看作小狗。

youdao

There may have been several more. People who knew John Slaughter said there was no doubt they were dealing with an extremely serious man -- a man who could be very dangerous.

VOA: special.2010.03.17

I just want to make mention of this in case there's ever doubt, generally parentheses do solve your problem as an arithmetic but do realize this is some lower level details we'll come back to over time.

是想告诉大家如果你对某些式子的前后运算关系不确定，就加上括号,这都是一些小细节,我们以后还是会再提到的。

哈佛公开课 - 计算机科学课程节选

Would an omnipotent, would a truly all-powerful God actually doubt the extent of His own empire?

一个全能的，真正无所不能的上帝,怎么会怀疑他自己的王国的范围呢？

耶鲁公开课 - 弥尔顿课程节选

With an injury doubt surrounding Dan Luger, Northampton wing Cohen will be looking for an impressive performance after being dropped for the first Test against South Africa in Pretoria.

BBC: All change for England

After an initial doubt, he was relieved to see that Shepperton was still deserted.

NEWYORKER: The Autobiography of J.G.B.

The player is an injury doubt ahead of Sunday's Old Firm derby at Ibrox.

BBC: Police launch inquiry into Allan McGregor incident