diff --git a/docs/数学进阶/6.042J.en.md b/docs/数学进阶/6.042J.en.md
index 2aec6da1..5b16c493 100644
--- a/docs/数学进阶/6.042J.en.md
+++ b/docs/数学进阶/6.042J.en.md
@@ -8,7 +8,7 @@
 - Difficulty: 🌟🌟🌟
 - Class Hour: 50-70 hours
 
-This Course is MIT discrete mathematics and probability course is taught by the notable Tom Leighton (co-founder of Akamai). The course is very useful for learning algorithm subsequently.
+This is MIT‘s discrete mathematics and probability course taught by the notable Tom Leighton (co-founder of Akamai). It is very useful for learning algorithms subsequently.
 
 ## Course Resources