diff --git a/docs/books/distributed-system.md b/docs/books/distributed-system.md
index 9912055c..b3923db2 100644
--- a/docs/books/distributed-system.md
+++ b/docs/books/distributed-system.md
@@ -4,7 +4,7 @@ category: 计算机书籍
 icon: distributed-network
 ---
 
-**[《Designing Data-Intensive Application》](https://book.douban.com/subject/30329536/)**（DDIA，数据密集型应用系统设计）
+**[《Designing Data-Intensive Application》](https://book.douban.com/subject/30329536/)** （DDIA，数据密集型应用系统设计）
 
 ![](https://guide-blog-images.oss-cn-shenzhen.aliyuncs.com/github/javaguide/books/ddia.png)
 
diff --git a/docs/java/basis/java-basic-questions-02.md b/docs/java/basis/java-basic-questions-02.md
index e0740d6f..1b799250 100644
--- a/docs/java/basis/java-basic-questions-02.md
+++ b/docs/java/basis/java-basic-questions-02.md
@@ -481,7 +481,7 @@ public final class String implements java.io.Serializable, Comparable<String>, C
 
 #### 字符串拼接用“+” 还是 StringBuilder?
 
-Java 语言本身并不支持运算符重载，“+”和“+=”是专门为 String 类重载过的运算符，也是 Java 中仅有的两个重载过的元素符。
+Java 语言本身并不支持运算符重载，“+”和“+=”是专门为 String 类重载过的运算符，也是 Java 中仅有的两个重载过的运算符。
 
 ```java
 String str1 = "he";