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algebra + singular verb
Algebra is a fundamental subject.
代数学是一门基础学科。
代数学；代数
先理解核心含义，再看它在真实句子里的用法。
代数学；代数
A branch of mathematics that uses symbols and letters to represent numbers and quantities in equations and to study the rules for manipulating them.
Algebra is a fundamental subject.
代数学是一门基础学科。
Elementary algebra: A system for representing and manipulating unknown quantities (variables) in equations.
关于广义算术运算的数学分支
the mathematics of generalized arithmetical operations
Any of several objects of study in Algebra
A collection of subsets of a given set, such that this collection contains the empty set, and the collection is closed under unions and complements (and thereby also under intersections and differences).
I am studying algebra this semester.
这学期我在学习代数。
Algebra helps solve real-world problems.
代数有助于解决实际问题。
Advanced algebra deals with groups, rings, and fields.
高等代数涉及群、环和域等概念。
Algebra is a fundamental subject.
代数学是一门基础学科。
I study algebra every day.
我每天学习代数。
We solve equations in algebra.
在代数学中我们解方程。
Not this
I study algebraic.
Use this
I study algebra.
algebra 是名词，而 algebraic 是形容词；表示学科时，应用名词形式。
Not this
I am good in algebra.
Use this
I am good at algebra.
表示在某学科方面擅长时，固定搭配介词用 at，而非 in。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
线性代数
She is taking a course in linear algebra this semester.
她这学期在上线性代数课程。
初等代数
Elementary algebra introduces the idea of using letters to represent numbers.
初等代数介绍用字母表示数字的概念。
抽象代数
Abstract algebra studies algebraic structures such as groups and rings.
抽象代数研究群和环等代数结构。
布尔代数
Boolean algebra is fundamental to the design of digital circuits.
布尔代数是数字电路设计的基础。
代数题
He spent an hour trying to solve the algebra problem.
他花了一个小时试图解那道代数题。
代数课
I have an algebra class at nine o'clock.
我九点钟有代数课。
Use algebra naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
读作‘艾尔吉不拉’，想象未知数 x 被‘拉’进等式里；用字母来算数，就是代数。
语域：neutral 常见场景：math class、textbooks、academic discussion algebra 作为数学分支，通常用于课堂、教科书和学术讨论等正式或教育场合；日常口语中也常说 school algebra，但整体语气中性，不显随意或过于正式。
作学科讲时通常不可数，但指不同代数系统时可用复数。
Dictionary facts from ECDICT, WIKTIONARY.