diff --git a/src/ch09-02-recoverable-errors-with-result.md b/src/ch09-02-recoverable-errors-with-result.md
index 049a668..2177c36 100644
--- a/src/ch09-02-recoverable-errors-with-result.md
+++ b/src/ch09-02-recoverable-errors-with-result.md
@@ -135,19 +135,19 @@ use std::fs::File;
 use std::io::ErrorKind;
 
 fn main() {
-    let f = File::open("hello.txt").map_err(|error| {
+    let f = File::open("hello.txt").unwrap_or_else(|error| {
         if error.kind() == ErrorKind::NotFound {
             File::create("hello.txt").unwrap_or_else(|error| {
-                panic!("Tried to create file but there was a problem: {:?}", error);
+                panic!("Problem creating the file: {:?}", error);
             })
         } else {
-            panic!("There was a problem opening the file: {:?}", error);
+            panic!("Problem opening the file: {:?}", error);
         }
     });
 }
 ```
 
-在阅读完第十三章后再回到这个例子，并查看标准库文档 `map_err` 和 `unwrap_or_else` 方法都做了什么操作。还有很多这类方法可以消除大量处理错误时嵌套的 `match` 表达式。
+在阅读完第十三章后再回到这个例子，并查看标准库文档 `unwrap_or_else` 方法都做了什么操作。在处理错误时，还有很多这类技巧可以消除大量嵌套的 `match` 表达式。
 
 ### 失败时 panic 的简写：`unwrap` 和 `expect`