diff --git a/docs/数据结构与算法/CS170.en.md b/docs/数据结构与算法/CS170.en.md
index b5d00017..aef54092 100644
--- a/docs/数据结构与算法/CS170.en.md
+++ b/docs/数据结构与算法/CS170.en.md
@@ -8,17 +8,17 @@
 - Difficulty: 🌟🌟🌟
 - Class Hour: 60 hours
 
-Berkeley's algorithm design course which focuses more on the theoretical foundations and complexity analysis of algorithms. The course covers Divide-and-Conquer, Graph Algorithms, Shortest Paths, Spanning Trees, Greedy Algorithms, Dynamic programming, Union Finds, Linear Programming, Network Flows, NP-Completeness, Randomized Algorithms, Hashing, etc.
+This is Berkeley's algorithm design and analysis course. It focuses on the theoretical foundations and complexity analysis of algorithms, covering Divide-and-Conquer, Graph Algorithms, Shortest Paths, Spanning Trees, Greedy Algorithms, Dynamic programming, Union Finds, Linear Programming, Network Flows, NP-Completeness, Randomized Algorithms, Hashing, etc.
 
-The textbook for this course is well written and the proofs in it are easy to understand and very suitable as a reference book. In addition, this class has only written assignments and is recommended to be written in LaTeX, so you can take this opportunity to practice your LaTeX skills.
+The textbook for this course is well written and very suitable as a reference book. In addition, this class has written assignments and is recommended to use LaTeX. You can take this opportunity to practice your LaTeX skills.
 
 ## Course Resources
 
 - Course Website: <https://cs170.org/>
 - Recordings: <https://www.youtube.com/playlist?list=PLnocShPlK-Ft-o7NInBDw18be86dNaxlT>
-- Recordings: refer to course website
-- Assignments: refer to course website
+- Recordings: refer to the course website
+- Assignments: refer to the course website
 
 ## Personal Resources
 
-All the resources and assignments used by @PKUFlyingPig in this course are maintained in [PKUFlyingPig/UCB-CS170 - GitHub](https://github.com/PKUFlyingPig/UCB-CS170)
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+All the resources and assignments used by @PKUFlyingPig in this course are maintained in [PKUFlyingPig/UCB-CS170 - GitHub](https://github.com/PKUFlyingPig/UCB-CS170)