Political analysts say they doubt an immigration reform bill will be passed this year with congressional elections in November.

VOA: standard.2010.04.12

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

The Scottish Criminal Cases Review Commission had found enough doubt surrounding some evidence presented in that trial to recommend the case merited an appeal.

VOA: standard.2009.09.19