diff --git a/listings/ch18-oop/listing-18-08/src/lib.rs b/listings/ch18-oop/listing-18-08/src/lib.rs
index 960fee2..8aeaf5d 100644
--- a/listings/ch18-oop/listing-18-08/src/lib.rs
+++ b/listings/ch18-oop/listing-18-08/src/lib.rs
@@ -22,6 +22,6 @@ pub struct Button {
 
 impl Draw for Button {
     fn draw(&self) {
-        // code to actually draw a button
+        // 实际绘制按钮的代码
     }
 }