diff --git a/pages/总复习2023t1.md b/pages/总复习2023t1.md
index 28b7980..122aacb 100644
--- a/pages/总复习2023t1.md
+++ b/pages/总复习2023t1.md
@@ -2666,8 +2666,8 @@
 						  ![image.png](../assets/image_1686901672954_0.png)
 						- For every event A, $$P (A) = 1 − P (A)$$.
 						- If A ⊂ B, then P (B − A) = P (B) − P (A) and P (A) ⩽ P (B).
-						- For every two events A and B,
-						  $$P (A ∪ B) = P (A) + P (B) − P (AB)$$.
+						- ==For every two events A and B,==
+						  $$P (A ∪ B) = P (A) + P (B) − P (AB)$$
 						-
 					- Properties of Probability
 			- LATER 学积分