diff --git a/assets/section_2.5_1686968005870_0.edn b/assets/section_2.5_1686968005870_0.edn
index d899181..6a2b0ff 100644
--- a/assets/section_2.5_1686968005870_0.edn
+++ b/assets/section_2.5_1686968005870_0.edn
@@ -45,5 +45,17 @@
                           :rects (),
                           :page 5},
                :content {:text "[:span]", :image 1686970168349},
+               :properties {:color "yellow"}}
+              {:id #uuid "648d25a0-12d9-47c5-b9ca-f7cafdf15d89",
+               :page 14,
+               :position {:bounding {:x1 35,
+                                     :y1 73.5830078125,
+                                     :x2 658,
+                                     :y2 486.5830078125,
+                                     :width 677.2919999999999,
+                                     :height 507.96853333333326},
+                          :rects (),
+                          :page 14},
+               :content {:text "[:span]", :image 1686971806691},
                :properties {:color "yellow"}}],
  :extra {:page 14}}
diff --git a/assets/section_2.5_1686968005870_0/14_648d25a0-12d9-47c5-b9ca-f7cafdf15d89_1686971806691.png b/assets/section_2.5_1686968005870_0/14_648d25a0-12d9-47c5-b9ca-f7cafdf15d89_1686971806691.png
new file mode 100644
index 0000000..09eacc8
Binary files /dev/null and b/assets/section_2.5_1686968005870_0/14_648d25a0-12d9-47c5-b9ca-f7cafdf15d89_1686971806691.png differ
diff --git a/pages/hls__section_2.5_1686968005870_0.md b/pages/hls__section_2.5_1686968005870_0.md
index dfc77d9..e71ac3d 100644
--- a/pages/hls__section_2.5_1686968005870_0.md
+++ b/pages/hls__section_2.5_1686968005870_0.md
@@ -28,4 +28,11 @@ file-path:: ../assets/section_2.5_1686968005870_0.pdf
   hl-color:: yellow
   id:: 648d1f39-bc89-4efe-98b3-1c654716cf65
   hl-type:: area
-  hl-stamp:: 1686970168349
\ No newline at end of file
+  hl-stamp:: 1686970168349
+- [:span]
+  ls-type:: annotation
+  hl-page:: 14
+  hl-color:: yellow
+  id:: 648d25a0-12d9-47c5-b9ca-f7cafdf15d89
+  hl-type:: area
+  hl-stamp:: 1686971806691
\ No newline at end of file
diff --git a/pages/总复习2023t1.md b/pages/总复习2023t1.md
index 1579a6b..f98b303 100644
--- a/pages/总复习2023t1.md
+++ b/pages/总复习2023t1.md
@@ -2809,9 +2809,10 @@
 							- Standard distribution ((648d1f39-bc89-4efe-98b3-1c654716cf65))
 							- Properties
 								- mean and variance :-> ((648d1bfd-fcfb-43ed-801e-0de972c24cb1))
-							- Example
-								-
 						- Exponential Distribution
+							- Definition:
+								- ((648d25a0-12d9-47c5-b9ca-f7cafdf15d89))
+								-
 						- Normal Distribution
 			- LATER 学积分
 			  :LOGBOOK: