diff --git a/sim_scenes/fiction/fixed_stars_1.py b/sim_scenes/fiction/fixed_stars_1.py
index 21e8c41e4db34fb25baaf65da83b53c1a4e305f1..55ab4590e6dd0656f6e74be96469d53e062a66d2 100644
--- a/sim_scenes/fiction/fixed_stars_1.py
+++ b/sim_scenes/fiction/fixed_stars_1.py
@@ -55,6 +55,7 @@ if __name__ == '__main__':
 
     # 使用 ursina 查看的运行效果
     # 常用快捷键： P：运行和暂停  O：重新开始  I：显示天体轨迹
+    #             M：摄像机移动加速  N:摄像机移动减速
     # position = (左-右+、上+下-、前+后-)
     ursina_run(bodies, SECONDS_PER_WEEK,
                position=(0, AU, -AU / 500),
diff --git a/sim_scenes/fiction/fixed_stars_2.py b/sim_scenes/fiction/fixed_stars_2.py
index c64c52aee5aedc643050561187e92adebb47c66c..183e011dffa3ae6545f510f25f1f1d22c3b117a8 100644
--- a/sim_scenes/fiction/fixed_stars_2.py
+++ b/sim_scenes/fiction/fixed_stars_2.py
@@ -55,6 +55,7 @@ if __name__ == '__main__':
 
     # 使用 ursina 查看的运行效果
     # 常用快捷键： P：运行和暂停  O：重新开始  I：显示天体轨迹
+    #             M：摄像机移动加速  N:摄像机移动减速
     # position = (左-右+、上+下-、前+后-)
     ursina_run(bodies, SECONDS_PER_WEEK,
                position=(0, 100000, -AU / 500),