diff --git a/1st.cpp b/1st.cpp
index 73d70ee..bc6e4cb 100644
--- a/1st.cpp
+++ b/1st.cpp
@@ -18,9 +18,19 @@ public:
 class Motor : public Device {
 public:
     void turnOn() override {
+        if(needsWarmup()) {
+            warmup(); // 預熱馬達
+        }
         // 啟動馬達
     }
     void turnOff() override {
         // 關閉馬達
     }
+private:
+    bool needsWarmup() {
+        // 判斷馬達是否需要預熱
+    }
+    void warmup() {
+        // 預熱馬達
+    }
 };
\ No newline at end of file