diff --git a/sources/tech/20180926 3 open source distributed tracing tools.md b/sources/tech/20180926 3 open source distributed tracing tools.md
index 197fd9450e..9879302d38 100644
--- a/sources/tech/20180926 3 open source distributed tracing tools.md	
+++ b/sources/tech/20180926 3 open source distributed tracing tools.md	
@@ -1,3 +1,5 @@
+translating by belitex
+
 3 open source distributed tracing tools
 ======