They waited for it with a smile. They had no more doubt as to their success than as to their cause.

他们含笑以待，对自己的事业既不发生怀疑，也不怀疑自己的胜利。

youdao

Decisions made without a real sense of certainty rarely lead to anything other than more doubt.

如果在不确定的基础上做决定只会带来更多的疑问。

youdao

"Without a doubt we will hit more obstacles.

VOA: special.2010.08.21

At first there was doubt and controversy, which has completely gone away, as more and more examples of this writing have become available and scholars are now able, by and large, to be confident that they know what these things say.

开始的时候还充斥着质疑的声音,而现在已经无可争议,因为已经有,越来越多这样的文字出土,学者们现在,对辨认出这些东西的含义,相当有自信了

耶鲁公开课 - 古希腊历史简介课程节选

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

And a lot more doubt about whether this war can actually ever be won.

NPR: Bush Faces Tougher Audience in This Year's Address

The voting decision was not unanimous (7-2), which opens room for more doubt.

FORBES: Is The Euro Relying on Excuses?

The New Jersey ruling casts even more doubt, because it opens up the potential that Merck could become caught up in re-fighting past battles.

FORBES: Magazine Article