diff --git a/sources/tech/20170526 Use pushd and popd for Efficient Filesystem Navigation in Linux.md b/sources/tech/20170526 Use pushd and popd for Efficient Filesystem Navigation in Linux.md
index 6d6cef4192..fd13cfef4b 100644
--- a/sources/tech/20170526 Use pushd and popd for Efficient Filesystem Navigation in Linux.md	
+++ b/sources/tech/20170526 Use pushd and popd for Efficient Filesystem Navigation in Linux.md	
@@ -1,3 +1,5 @@
+ucasFL translating
+
 Use ‘pushd’ and ‘popd’ for Efficient Filesystem Navigation in Linux
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