principal

英 [ˈprɪnsəpl]

美 [ˈprɪnsəpl]

adj. 最重要的; 主要的
n. 大学校长; 学院院长; 本金; 资本; 主要演员; 主角

复数：principals　

Collins.3 / BNC.2225 / COCA.3124

牛津词典

adj.

noun

大学校长；学院院长
the person who is in charge of a college or a university
1. Principal Ray Smith
  雷∙史密斯校长
大学校长；学院院长
the person who is in charge of a college or a university
1. Principal Ray Smith
  雷∙史密斯校长
本金；资本
an amount of money that you lend to sb or invest to earn interest
主要演员；主角
the person who has the most important part in a play, an opera , etc.
（尤指商务或法律事务的）当事人，委托人
a person that you are representing, especially in business or law

ADJ 首要的；最主要的；最重要的
Principalmeans first in order of importance.
1. The principal reason for my change of mind is this.
  这是我改变主意的最主要原因。
2. ...the country's principal source of foreign exchange earnings...
  这个国家最主要的外汇收入来源
3. Their principal concern is bound to be that of winning the next general election.
  他们最关心的问题肯定是赢得下一次大选。
N-COUNT （中小学）校长；（英国）大学校长，学院院长
Theprincipalof a school, or in Britain theprincipalof a college, is the person in charge of the school or college.
1. Donald King is the principal of Dartmouth High School.
  唐纳德·金是达特茅斯中学的校长。

noun

the major party to a financial transaction at a stock exchange
Synonym:dealer
the educator who has executive authority for a school
1. she sent unruly pupils to see the principal
Synonym:school principalhead teacherhead
(criminal law) any person involved in a criminal offense, regardless of whether the person profits from such involvement
an actor who plays a principal role
Synonym:starlead
capital as contrasted with the income derived from it
Synonym:corpusprincipal sum
the original amount of a debt on which interest is calculated

A group of students asked to see the principal.
一批学生要求见校长。
The principal keeps all our school reports on file.
校长把我校的所有报告都存档保存.
They were the principal shareholders in a bank riddled with corruption
他们是一家腐败成风的银行的主要股东。
A country's principal resource is its brainpower.
一个国家的首要资源是其人才资源。
The principal adrenocortical products are aldosterone, cortisol and dehydroepiandrosterone sulphate.
肾上腺皮质的主要产物为醛固酮、皮质醇和脱氢异雄酮硫酸盐。
The students passed a motion of no-confidence in the college principal.
学生们通过了对校长进行不信任投票的动议。
The term 'vegetation type' designates the principal unit of major rank in Russian geobotany.
在苏联地球植物学中，“植被型”一词是指主要高级单位。
The principal came down hard on the boys for breaking the window.
校长把那些打破窗户的男生狠狠地训了一顿。
When he saw the principal, he raised his hand in salute.
他看到校长时举手敬礼。
The two principal combustion products are water vapor and carbon dioxide.
两种主要的燃烧产物是水蒸气和二氧化碳。