时长与镜头：15 秒五个剧情节点：来袭 → 防御 → 突破与转向 → 反击撞击 → 消失。原文是"一句一个镜头"的写法，每一句都是一个画面变化，模型会自动剪成快节奏蒙太奇；本站补的时间码只是帮你控制节奏，删掉也能用。

怎么用：这类宏大场面适合做视频开头的 3–5 秒空镜，或者当科幻短片的预告。想要更多控制，可以把它拆成三条分别生成：①城市与小行星护盾的建立镜头，②战机冲入小行星带，③巨大撞击，最后剪辑拼接。

怎么填变量：核心创意是"环境本身就是武器"，可以替换成"一座海上城市把海浪当成护盾""一片森林把树根当成防线"，保持"来袭 → 防守 → 反转 → 结局"四拍不变。

常见失败与调整：

• 画面太乱看不出剧情：删掉"成千上万""数百架"等夸张数量，减少同屏元素。
• 城市看起来很小：加"超广角远景，城市占据画面一半"。
• 出现类似某部电影的飞船造型：写"原创的飞船设计，流线型白色外壳"。

改编自 @AllaAisling 发布、YouMind-OpenLab/awesome-seedance-2-prompts 收录的提示词，许可证 CC BY 4.0。

英文原版

15-second cinematic photorealistic science-fiction action short, 16:9.
A gigantic futuristic city travels through deep space inside an enormous asteroid storm.
Thousands of spacecraft fly alongside it, actively manipulating the asteroids into a constantly moving defensive shield.
Suddenly an enemy fleet attacks.
Hundreds of fighters dive into the asteroid field.
The city accelerates.
Asteroids slam into attacking ships.
Defensive spacecraft race between enormous rocks, pushing them into new trajectories.
A massive enemy warship breaks through the asteroid shield and fires directly at the city.
The entire city suddenly changes direction.
The asteroid field moves with it.
Millions of rocks swing into formation around the city like a gigantic mechanical organism.
The attacking warship realizes too late that the asteroid field itself is the city's weapon.
A colossal impact fills the screen.
End on the city disappearing into the moving storm.

Photorealistic hard science fiction, spectacular asteroid environments, relentless combat, massive moving structures, fast camera movement, detailed spacecraft, huge scale, cinematic action, no text, no logos, no anime, no cartoon.