diff --git a/cf3.py b/cf3.py
index a90bf3a..3760e97 100644
--- a/cf3.py
+++ b/cf3.py
@@ -43,7 +43,7 @@ product_ratings_window = defaultdict(lambda: defaultdict(lambda: [0, 0]))
 
 def get_top_n_products(ratings_dict, n=3):
     rated_products = [
-        (prod, total / cnt) for prod, (total, cnt) in ratings_dict.items()
+        (prod, total / cnt) for prod, (total, cnt) in ratings_dict.items()#用字典，剑是商品名，值是总评分，次数
     ]
     rated_products.sort(key=lambda x: x[1], reverse=True)
     return [p[0] for p in rated_products[:n]]
@@ -51,8 +51,8 @@ def get_top_n_products(ratings_dict, n=3):
 # =================== 插入 MySQL 函数
 def insert_top_products_to_mysql(category, top_products_list, window_end_time):
     try:
-        top_products_json = json.dumps(top_products_list, ensure_ascii=False)
-        timestamp = time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(window_end_time))
+        top_products_json = json.dumps(top_products_list, ensure_ascii=False)#数据转换
+        timestamp = time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(window_end_time))#热门商品列表（JSON 字符串）
         query = """
         INSERT INTO category_top_products (category, top_products, timestamp)
         VALUES (%s, %s, %s)
@@ -67,7 +67,7 @@ def insert_top_products_to_mysql(category, top_products_list, window_end_time):
 # =================== 主循环
 try:
     while True:
-        msg = consumer.poll(timeout=1.0)
+        msg = consumer.poll(timeout=1.0)#消息轮询
         current_time = int(time.time())
 
         # 判断是否到了窗口结束时间
@@ -76,7 +76,7 @@ try:
 
             # 为每个类别生成 Top 3 推荐
             for category, products in product_ratings_window.items():
-                top3 = get_top_n_products(products)
+                top3 = get_top_n_products(products)#热门商品
                 insert_top_products_to_mysql(category, top3, current_time)
 
             # 清空窗口缓存，更新窗口起始时间
diff --git a/show.py b/show.py
new file mode 100644
index 0000000..222b579
--- /dev/null
+++ b/show.py
@@ -0,0 +1,9 @@
+# product_ratings_window = {
+#     "电子产品": {
+#         "手机": [总分, 次数],
+#         "电脑": [总分, 次数]
+#     },
+#     "图书": {
+#         "Python": [总分, 次数]
+#     }
+# }
\ No newline at end of file