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

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

He also said a more responsive and effective Afghan government would help dispel doubt in the international community and inspire more assistance.

VOA: standard.2009.10.23

But in souvenir photos of those days, more than a few metal flasks, no doubt containing something stronger than Bubble-Up, can be seen on the floor beneath the tables.

VOA: standard.2010.02.25

"The more banal he is, the more terrifying he is. There is no doubt and I'll say without question that it was the most difficult thing I've ever done as an actor."

VOA: standard.2010.01.08