principal
- adj.主要的;最重要的
- n.本金;当事人，委托人;资本;主角;学院院长;大学校长;主要演员
复数： principals
prin- 第一,主要的 + cip- 拿,抓 + -al ...的
principaladj.
only before noun最重要的；主要的
most important; main
The principal reason for this omission is lack of time.
跳过它的主要原因是时间不足。
New roads will link the principal cities of the area.
新建道路将连通这个地区的主要城市。
noun
大学校长；学院院长
the person who is in charge of a college or a university
Peter Brown, principal of St John's college
彼得∙布朗，圣约翰学院院长
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
These words all describe sb/sth that is the largest or most important of its kind.以上各词均用以形容主要的、最重要的人或事物。
[only before noun] largest or most important指主要的、最重要的：
Be careful crossing the main road.
过大马路时小心点。
The main thing is to remain calm.
最重要的是要保持冷静。
[usually before noun] very large or important指主要的、重要的、大的：
He played a major role in setting up the system.
他在建立这个系统的过程中扮演了主要的角色。
[usually before noun] most important; essential指最重要的、主要的、关键的：
He was a key figure in the campaign.
他是这场运动的关键人物。
( rather formal ) most important指最重要的、首要的、主要的：
The central issue is that of widespread racism.
最重要的问题是种族主义泛滥。
[only before noun] ( rather formal ) most important指最重要的、主要的：
The principal reason for this omission is lack of time.
跳过它的主要原因是时间不足。
[only before noun] ( rather formal ) most important指最重要的、首要的、主要的：
Unemployment was the chief cause of poverty.
失业是贫穷的主要原因。
[only before noun] ( rather formal ) most important; to be considered first指主要的、首要的：
My prime concern is to protect my property.
我最关心的是保护自己的财产。
principal
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1
ADJ 首要的；最主要的；最重要的
Principal means first in order of importance.The principal reason for my change of mind is this.
这是我改变主意的最主要原因。
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2
N-COUNT （中小学）校长；（英国）大学校长，学院院长
The principal of a school, or in Britain the principal of a college, is the person in charge of the school or college.Donald King is the principal of Dartmouth High School.
唐纳德·金是达特茅斯中学的校长。
noun
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1
- the major party to a financial transaction at a stock exchange;buys and sells for his own account
- Synonym: dealer
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2
- the educator who has executive authority for a school
- she sent unruly pupils to see the principal
- Synonym: school principal head teacher head
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3
- (criminal law) any person involved in a criminal offense, regardless of whether the person profits from such involvement
-
4
- an actor who plays a principal role
- Synonym: star lead
-
5
- capital as contrasted with the income derived from it
- Synonym: corpus principal sum
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6
- the original amount of a debt on which interest is calculated
数据来源：WordNet
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The low salary is her principal reason for leaving the job .
工资太低是她辞去那工作的最重要的原因。
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A tall tree was thus the principal mark .
大树是最重要的标记。
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Further information is available on application to the principal .
申请书请交校长，届时将提供详情。
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New roads will link the principal cities of the area .
新建道路将连通这个地区的主要城市。
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The principal reason for this omission is lack of time .
跳过它的主要原因是时间不足。
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We looked around the school and talked with the principal .
我们参观了那所学校，并跟校长进行了交谈。
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The principal knows all the students by name .
校长能叫出所有学生的姓名。
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The college principal promised to look into the matter .
学院院长答应研究这个问题。
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It was done without the principal 's authority .
做这件事未经校长批准。
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Everyone will be there , from the Principal down .
从校长下至每个人都将到场。
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The principal effect of the demand for new houses was to inflate prices .
对新住宅需求的主要结果是促使价格上涨。
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The map shows the principal towns and rivers .
这张地图标出了主要城镇和河流。
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She abused her position as principal by giving jobs to her friends .
她滥用自己作为校长的职权，把工作安排给朋友们。
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The principal is a very busy woman .
校长是个大忙人。
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The principal waffled on about exam results but no one was listening .
校长絮絮叨叨地谈着考试结果，但是谁也没有听进去。
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The day commenced with a welcome from the principal .
那天由校长致欢迎词开始。
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Everyone sprang to their feet when the principal walked in .
校长进来时，所有的人都立刻站了起来。
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Applications with a full curriculum vitae and two references should reach the Principal by June 12th .
申请书连同完整个人简历和两份推荐信必须在6月12日以前送达校长处。
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The principal reason for my change of mind is this .
这是我改变主意的最主要原因。
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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。
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The principal range runs east to west .
主体山脉呈东西走向。
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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。
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A country 's principal resource is its brainpower .
一个国家的首要资源是其人才资源。
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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。
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Donald King is the principal of Dartmouth High School .
唐纳德·金是达特茅斯中学的校长。
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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。
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Manchester College elected him Principal in 1956
曼彻斯特学院于1956年推选他做院长。
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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。
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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。
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Stoppard had to recast four of the principal roles .
斯托帕德只好更换4个主要角色的人选。