It has developed from two sources : algebraic geometry and algebraic member theory.是什么意思？

It has developed from two sources : algebraic geometry and algebraic member theory.

它由两个方面发展而来,代数几何和代数数论.

it

pron. 它，他，正好是所需的，事实[情况]；n. <美俚>傻瓜，笨蛋，<俚>绝妙的人，理想的东西，登峰造极；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

has

v. 有( have的第三人称单数 )，（亲属关系中）接受，拿，买到；

例句
...the operation a patient has had.
病人做过的手术

developed

adj. 先进的，发达的（国家或地区）；

例句
He had developed a slight American accent.
他说话带上了一点轻微的美国口音。

from

prep. （表示时间）从…，（表示原因）因为，（表示来源）来自…，（表示分离）与…分离[隔开]；

例句
...an abortive attempt to prevent the current President from taking office.
企图阻止现任总统连任的失败尝试

two

n. 两个，两个东西，两点钟，一对；adj. 两个的，我

例句
He has been absent from his desk for two weeks...
他已经有两个星期没有坐在办公桌前了。

sources

n. 原因( source的名词复数 )，[物理学]源，来源，起源；

例句
They believed ancient Greece and Rome were vital sources of learning.
他们认为古代希腊罗马是知识的重要发源地。

algebraic

adj. 代数的，关于代数学的；

例句
It has developed from two sources : algebraic geometry and algebraic member theory.
它由两个方面发展而来,代数几何和代数数论.

geometry

n. 几何学，几何形状，几何图形，几何学著作；

例句
His idea was to apply geometry to dynamics.
他的想法就是将几何学应用在力学上。

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

member

n. 成员，分子，身体部位（尤指胳膊或腿），构件，部件；

例句
He was now a teacher and a respectable member of the community.
他现在是一位教师，并且是社区内受人尊敬的一员。

theory

n. 学说，理论，原理，推测；

例句
...a theory that is steadily gaining acceptance...
逐步得到承认的理论