7 sentences

1. 层论是代数几何的重要基础。

   céng lùn shì dài​shù jǐ​hé de zhòng​yào jī​chǔ.

   Sheaf theory is an important foundation of algebraic geometry.

   Source: Dong Chinese Dictionary

2. 代数是数学的一个重要分支。

   dài​shù shì shù​xué de yī gè zhòng​yào fēn​zhī.

   Algebra is an important branch of mathematics.

   Source: Dong Chinese Dictionary

3. 这道代数式的解法一共有三种。

   zhè dào dài​shù shì de jiě​fǎ yī​gòng yǒu sān zhǒng.

   There are three ways to solve this algebraic expression.

   Source: Dong Chinese Dictionary

4. 矩阵是线性代数中的核心概念。

   jǔ​zhèn shì xiàn​xìng dài​shù zhōng de hé​xīn gài​niàn.

   Matrices are a core concept in linear algebra.

   Source: Dong Chinese Dictionary

5. 在这个代数式中，x的系数是5。

   zài zhè​gè dài​shù shì zhōng,x de xì​shù shì5.

   In this algebraic expression, the coefficient of x is 5.

   Source: Dong Chinese Dictionary

6. 线性代数是数学的一个重要分支。

   xiàn​xìng dài​shù shì shù​xué de yī gè zhòng​yào fēn​zhī.

   Linear algebra is an important branch of mathematics.

   Source: Dong Chinese Dictionary

7. 在这道代数题中，我们需要首先确定表达式里的底数和指数。

   zài zhè dào dài​shù tí zhōng, wǒ​men xū​yào shǒu​xiān què​dìng biǎo​dá​shì lǐ de dǐ​shù hé zhǐ​shù.

   In this algebra problem, we first need to determine the base and the exponent in the expression.

   Source: Dong Chinese Dictionary