diff --git a/library/datetime.po b/library/datetime.po
index ae13bec8e3..e49f546a7a 100644
--- a/library/datetime.po
+++ b/library/datetime.po
@@ -3188,7 +3188,7 @@ msgstr "註解"
 
 #: ../../library/datetime.rst:2619
 msgid "If, that is, we ignore the effects of Relativity"
-msgstr ""
+msgstr "也就是說，我們會忽略相對論的效應"
 
 #: ../../library/datetime.rst:2621
 msgid ""