the principal

常见例句

Today the principal tools for prospecting the brain are electrical.
当今探查人脑的主要工具是用电的。
Such risk factors and behaviours can lead to some of the principal causes of death, disease and disability.
这类危险因素和行为有可能成为导致某些死亡、疾病和残疾的主要原因。
This was the principal criterion by which all design decisions were evaluated.
这是主要的标准，所有设计决策都根据这个标准进行了评估。

Many years ago,the principal of the local high school came to him to develop a theater program for the school.
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 it could be blown out of proportion and misused by the principal or by third parties.
那么事态可能会扩大，安乐死的做法会被主要相关人员和第三方滥用。
对于安乐死的看法 - SpeakingMax英语口语达人

So Mom can use the 5% for a luxury cruise, then tap the principal for condo maintenance.
FORBES: Death, Taxes and Dice Rolling
The Securities and Exchange Commission (SEC) is one of the principal culprits in the financial panic of 2008.
FORBES: The Inept Financial Reform Bill
They would be paid the principal plus interest once the land had been carved into plots and sold.
FORBES: Pay Dirt