adj. 1.主要的，首要的，最重要的；第一的。 2.领头的；负责人的，首长的。 3.资本的，本金的，作为本钱的。 短语和例子 the principal actor 主要演员，主角。 the principal boy [girl] (哑剧中)扮演男［女］主角的女演员。 the principal offender 【法律】主犯。 the principal sum 资本，本金，本钱。 principal operations 主力战。 principal clause 【语法】(复合句中的)主句。 principal order 【化学】主序模。 principal parts 【语法】(动词的)主要变化形式〔现在、过去式及过去分词〕。 principal sentence 【语法】主句 (＝principal clause)。 principal tone 【音乐】主音。 n. 1.长；长官；首长；负责人；校长；社长；会长。 2.主动者；决斗的本人 (opp. second) 主要演员，主角；【法律】主犯；本人；(经纪人、代理人、受委托人所代表的)委托人 (opp. agent, surety)。 3.【商业】资本，本金 (opp. interest, dividend) 基本财产 (opp. income)。 4.【建筑】(主要)屋架；主构，主材。 5.【音乐】主音栓；(音乐会的)主奏者，独奏者，独唱者，主演者。 6.(艺术作品的)主题；特征。 短语和例子 a lady principal 女校长。 I must consult my principal. 我必须同委托人商量。 principal and interest 本利。 a principal in the first degree 主[从]犯。
the major party to a financial transaction at a stock exchange; buys and sells for his own account 同义词：dealer,
the educator who has executive authority for a school; "she sent unruly pupils to see the principal" 同义词：school principal, head teacher, head,
(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 同义词：star, lead,
capital as contrasted with the income derived from it 同义词：corpus, principal sum,
the original amount of a debt on which interest is calculated
most important element; "the chief aim of living"; "the main doors were of solid glass"; "the principal rivers of America"; "the principal example"; "policemen were primary targets"; "the master bedroom"; "a master switch" 同义词：chief, main, primary, master,
例句与用法
1.
Indeed i was the principal in the crime . 我真正做了这个罪恶的主犯。
2.
The principal literature comes from zoology . 主要文献都来自动物学。
3.
He was one of the principals of the film . 他是这部影片的主演之一。
4.
There are four principal types of limestones . 石灰岩有四种主要类型。
5.
These ultrafilters are called principal . 这样的超滤子称为主要的。
6.
She would not consider me a principal . 她不会把我当作重要人物。
7.
He is going to fill the position of principal . 他将去担任中学校长的职务。
8.
It was none other than the principal . 不是别人，是校长本人。
9.
The details of the principal cause are not known . 主因未详。
10.
My principal concern is my family 's welfare . 我至为关心的是我一家的幸福。
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