diff --git a/sources/tech/20190610 Expand And Unexpand Commands Tutorial With Examples.md b/sources/tech/20190610 Expand And Unexpand Commands Tutorial With Examples.md
index 01def369ed..2ba0e242ef 100644
--- a/sources/tech/20190610 Expand And Unexpand Commands Tutorial With Examples.md	
+++ b/sources/tech/20190610 Expand And Unexpand Commands Tutorial With Examples.md	
@@ -1,5 +1,5 @@
 [#]: collector: (lujun9972)
-[#]: translator: ( )
+[#]: translator: (geekpi)
 [#]: reviewer: ( )
 [#]: publisher: ( )
 [#]: url: ( )