diff --git a/docs/电子基础/Signals_and_Systems_AVO.en.md b/docs/电子基础/Signals_and_Systems_AVO.en.md
index 5f038786..0483664d 100644
--- a/docs/电子基础/Signals_and_Systems_AVO.en.md
+++ b/docs/电子基础/Signals_and_Systems_AVO.en.md
@@ -8,7 +8,7 @@
 - Difficulty: 🌟🌟
 - Class Hour: 50-70 hours
 
-The name of the course teacher: Prof. Alan V. Oppenheim
+The name of the instructor: Prof. Alan V. Oppenheim
 
 Okay, enough reason to take this class.