diff --git a/thu_dsa/chp6/Graph.md b/thu_dsa/chp6/Graph.md
index d1dacdd..0743505 100644
--- a/thu_dsa/chp6/Graph.md
+++ b/thu_dsa/chp6/Graph.md
@@ -19,8 +19,8 @@ Conclusion on Chapter Six: Graph
 + 简单通路：沿途顶点互异的通路。
 + 简单环路：除起点和终点外沿途所有顶点均互异的环路。
 
-欧拉环路：经过图中各边一次且恰好一次的环路。比如说一笔画问题。
-哈密尔顿环路：经过图中各顶点一次且恰好一次的环路。
++ 欧拉环路：经过图中各边一次且恰好一次的环路。比如说一笔画问题。
++ 哈密尔顿环路：经过图中各顶点一次且恰好一次的环路。
 
 ## 图的表示
 
@@ -66,7 +66,7 @@ void Graph<Tv, Te>::BFS(int x, int& clock){
 	Q.enqueue(x);
 	while(!Q.empty()){
 		x = Q.dequeue();
-		for(int w = firstNeighbor(x); w != -1; w = nextNeighbor(x, w))
+		for(int w = firstNeighbor(x); w != -1; w = nextNeighbor(x, w)){
 			if(status(w) == UNDISCOVERED){
 				status(w)  = DISCOVERED;
 				dtime(w)   = ++clock;
@@ -75,8 +75,9 @@ void Graph<Tv, Te>::BFS(int x, int& clock){
 				Q.enqueue(w);
 			}
 			else type(x, w) = CROSS;
+		}
+		status(x) = VISITED;
 	}
-	status(x) = VISITED;
 }
 ```
 
@@ -163,7 +164,7 @@ DFS的时间复杂度也与BFS一致。
 
 根据各个顶点的发现时间`dtime`和访问时间`ftime`，可以对顶点进行分类，获得顶点之间的祖先与后代关系信息。
 
-记`active(u) = [dtime(x), ftime(x)]`为顶点x在有向图G中的活跃期，括号引理即
+记`active(u) = [dtime(u), ftime(u)]`为顶点`u`在有向图G中的活跃期，括号引理即
 
 + 若$active(u) \subseteq active(v)$，则u是v的后代。
 + 若$active(u) \supseteq active(v)$，则u是v的祖先。
diff --git a/words.md b/words.md
index 9ad70d3..dff72e6 100644
--- a/words.md
+++ b/words.md
@@ -1559,4 +1559,67 @@ Some Words
 	- She affirmed her intention to apply for the post.
 	- The government has affirmed its commitment to equal rights.
 
-+ 
+## 28th, October
+
++ susceptible
+> (adj)easily influenced or harmed by something</br>
+> (adj)used to describe someone who is easily emotionally influenced
+
+	- These plants are particularly susceptible to frost.
+	- She isn't very susceptible to flattery.
+	- They persuade susceptible teenagers to part with their money.
+
++ psychiatrist
+> (n)a doctor who treats people suffering from mental illness.
+
++ affiliation
+> (n)a connection with a political party or religion, or with a larger organization.
+
+	- Their lack of affiliation to any particular bank allows them to give objective financial advice.
+	- The kidnappers had no affiliation with any military group.
+
++ substantial
+> (adj)large in size, value or importance
+
+	- The findings show a substantial difference between the opinions of men and women.
+	- She inherited a substantial fortune from her grandmother.
+
++ bipedal
+> (adj)walking on two legs, or relating to this movement
+
+	- He was facinated by the gaint, bipedal ape.
+	- Some dinosaurs were capable of bipedal walking.
+
++ bedrock
+> (n)the solid rock in the ground which supports all the soil above it.</br>
+> (n)the bedrock of something is the principles, ideas, or facts on which it is based.
+
+	- Mutual trust is the bedrock of a relationship.
+	- We believe in religious freedom as a bedrock principle of our democracy.
+
++ railroad
+> (v)to force something to happen or force someone to do something, especially quickly or unfairly.
+
+	- We were railroaded into signing the agreement.
+	- He more or less railroaded the rest of the Europe into recognising the new "independent" states.
+
++ substantiate
+> (v)to show something to be true, or to support a claim with facts.
+
+	- We have evidence to substantiate the allegations against him.
+	- Reports that children had been hurt have not been substantiated.
+
++ chauvinistic
+> (adj)believing or showing an unreasonable belief that your own country or race is the best or most important.</br>
+> (adj)believing that or behaving as if women are naturally less important, intelligent, or able than men.
+
+	- It is a deeply chauvinistic community where the few women who have jobs are ridiculed.
+
++ prod
+> (v)to push something or someone with your finger or with a pointed object.</br>
+> (v)to encourage someone to take action, especially when they are being slow or unwilling.
+
+	- I prodded her in the back to get her attention.
+	- She prodded the cake with her fork to see if it was cooked.
+	- He gets things done, but only after I've prodded him into doing them.
+ 
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