The lowest performing schools would face changes such as replacing teachers and the principal or being closed.

VOA: special.2010.03.18

These sources preserve different traditions on the number and the nature of the plagues, as well as the principal actors in the drama: God, Moses, Aaron.

这些素材都保留了不同的风格,不同瘟疫的数量，内容,关于三个主角，上帝，摩西，主角的描述也不相同。

耶鲁公开课 - 旧约导论课程节选

That's a good question. As a parent or as a principal?

这个问题很好。从父母还是校长的角度来说呢？

驯服淘气的人 - SpeakingMax英语口语达人

And he said Iran should be able to take advantage of all the opportunities in peaceful nuclear power engineering as long as the principal of non-proliferation of nuclear weapons is adhered to.

VOA: standard.2009.10.13

And we should use our military as our principal tool.

我们应主要采取武力方式解决问题。

普林斯顿公开课 - 国际座谈会课程节选

Your mortgage payment is constant through time but the fraction of it that goes to paying off principal versus interest changes through time and it just changes as dictated by this formula.

抵押贷款每月还款是固定的,但是其中本金和利息的比例关系,会随时间而改变,这是由这个公式所决定的

耶鲁公开课 - 金融市场课程节选