But if a trial is held, jurors are not required to decide "beyond a reasonable doubt.

VOA: special.2009.08.31

I have it on reserve, but that's not required for the mid-term; it's just if you're interested in seeing it.

我将其列为推荐书目,但不作为期中考试要求,如果你们感兴趣的话可以去读一下

耶鲁公开课 - 金融市场课程节选

The agency is not required to follow the advice of its committees, but generally does.

VOA: special.2009.07.08

But he added that careful analysis is required, and that actions taken by Iran's government do not lend credence to its claims of a free and fair vote.

VOA: standard.2009.06.14