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

Ever since World War the United States has been Japan's principal trade partner.
二次世界大战以来，美国一直是日本的主要贸易伙伴。
Thus the directions that emerge for extremizing the normal stress are the directions corresponding to the principal stresses.
因此，产生最大正应力的方向就是相应于主应力的方向。
The boys like the principal because he always plays fair.
这些男孩们喜欢这位校长，因为他总是公平待人。
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。
City's principal marksman was Joe Harvey who scored seventeen goals.
市队的头号射手是打进17粒进球的乔·哈维。
Donald King is the principal of Dartmouth High School.
唐纳德·金是达特茅斯中学的校长。
A group of students asked to see the principal.
一批学生要求见校长。
The post of principal of the theatre school became vacant and he leapt at the chance.
戏剧学校校长一职出缺，他马上抓住了这个机会。
On both large and small farms, one of the principal inhibitions to expansion of production can be insecurity of tenure.
不论大农场或小农场，扩大生产的主要抑制因素可能是租地使用权缺乏保障。
The book was kindly and favourably reviewed in the principal papers.
这本书得到几家主要报纸的赞许和好评。