diff --git a/day2/README.md b/day2/README.md
index a9a28d0..680389c 100644
--- a/day2/README.md
+++ b/day2/README.md
@@ -1,4 +1,4 @@
 ## 简并
 ### 'a/=2'   ==   'a=a/2'
 ## 切片
-### x[a:b:c]中c代表距 默认是1
\ No newline at end of file
+### x[ a: b :c ]中c代表距 默认是1
\ No newline at end of file