危机集：原因 → 系统 → 人的影响 → 杠杆

「危机集：原因 → 系统 → 人的影响 → 杠杆」（城市解说）字幕级无露脸大纲：钩子、结构时间轴、可核对事实与原创化提醒；参考 2 条上传者字幕。

角度

基于人工字幕定时节拍的选题大纲：危机集：原因 → 系统 → 人的影响 → 杠杆
人工字幕参考：C65iqOSCZOY、17kBVfGjI8c
只复用定时节拍与可引用事实——旁白须原创；时间戳上屏

钩子

0:00–0:40: 用人工字幕里的真实节拍冷开场，承诺为「危机集：原因 → 系统 → 人的影响 → 杠杆」给出可执行的无露脸大纲：时间轴 + 带时间戳事实 + 原创化提醒。旁白须原创，禁止照抄参考片脚本。 C65iqOSCZOY@0:07 17kBVfGjI8c@0:07

结构时间轴展开收起

17kBVfGjI8c 0:07–1:14 — Earthquakes are among the most common natural disasters in the world.
17kBVfGjI8c 1:19–2:20 — With each tremor, destructive forces are released, spreading out like waves from the hypocenter. Right above, on the Earth's surface, is the epicenter.
17kBVfGjI8c 2:22–2:22 — Some are so weak that they can only be detected by a seismograph.
C65iqOSCZOY 0:07–1:18 — Turn on a faucet and clean water rushes out, as much as we want, anytime we want.
C65iqOSCZOY 1:21–2:31 — There are perceptions that it is there in bountiful amounts and everyone has access to it because you can turn a tap, and that's a big problem.
C65iqOSCZOY 2:33–3:38 — We have 326 million trillion gallons of it. Water may freeze into ice or evaporate into air, but it doesn't leave our planet.
C65iqOSCZOY 4:45–5:49 — We've gotten a lot better at accessing groundwater.
C65iqOSCZOY 5:51–6:53 — Climate change is making available water much more erratic. We're seeing areas around the world that are experiencing much more extended dry periods.
C65iqOSCZOY 6:57–8:02 — Alfalfa is a common ingredient in cattle feed, and growing a kilogram of it takes 510 liters of water. An average cow consumes about 12 kilograms of feed a day.

字幕可核对事实展开收起

字幕依据：Earthquakes are among the most common natural disasters in the world. From one second to the next, the ground starts to shake, sometimes destroying entire cities. First, we should mention that the Earth's crust, the top layer of the Earth, is made up of 7 large and many small tectonic plates. 17kBVfGjI8c@0:07
字幕依据：With each tremor, destructive forces are released, spreading out like waves from the hypocenter. Right above, on the Earth's surface, is the epicenter. This is usually where the worst damage occurs. The strength of an earthquake is measured with a seismograph. 17kBVfGjI8c@1:19
字幕依据：Turn on a faucet and clean water rushes out, as much as we want, anytime we want. It's easy to forget that the quest for this has been one of the defining struggles of human history. Civilizations that harnessed water, thrived. C65iqOSCZOY@0:07
字幕依据：There are perceptions that it is there in bountiful amounts and everyone has access to it because you can turn a tap, and that's a big problem. In fact, by 2040 most of the world won't have enough water to meet demand year-round. C65iqOSCZOY@1:21
字幕依据：We have 326 million trillion gallons of it. Water may freeze into ice or evaporate into air, but it doesn't leave our planet. If you sucked up all the water on Earth, it would fit into this sphere. But 97% of it is salty and 2% is trapped in ice at the poles, so all of humankind relies on just 1% of that water to survive. C65iqOSCZOY@2:33
字幕依据：We've gotten a lot better at accessing groundwater. Those water deposits, called aquifers, have accumulated over millennia and they'll take millennia to fill back up. Groundwater is sort of like the savings account, which it's fine to draw on sometimes, especially when you have a drought. C65iqOSCZOY@4:45
字幕依据：Climate change is making available water much more erratic. We're seeing areas around the world that are experiencing much more extended dry periods. But the problem isn't just that there's more people on Earth using water, it's how we're using water. C65iqOSCZOY@5:51
字幕依据：Alfalfa is a common ingredient in cattle feed, and growing a kilogram of it takes 510 liters of water. An average cow consumes about 12 kilograms of feed a day. Divided up, just one quarter-pound hamburger takes around 1,650 liters of water to produce. C65iqOSCZOY@6:57

节拍 / 大纲

钩子（0:00–0:40）：冷开场点题「危机集：原因 → 系统 → 人的影响 → 杠杆」——讲清大地震的原因是地球板块的运动（旁白原创，勿照抄参考片）。
要点 1：讲清大地震的原因是地球板块的运动（17kBVfGjI8c@0:07）。
要点 2：演示地球板块的分布（17kBVfGjI8c@1:19）。
要点 3：讲清水资源的紧张问题（C65iqOSCZOY@0:07）。
要点 4：演示全球水资源的分布（C65iqOSCZOY@1:21）。
要点 5：演示全球水资源的分布（C65iqOSCZOY@2:33）。
收尾：三条定时引用回顾卡 + 来源上屏。旁白须原创。

转场

冷开场后打标题卡点明「危机集：原因 → 系统 → 人的影响 → 杠杆」的承诺。
切换参考片时用下三分显示 video id + 时间戳，方便核对。
收尾前定格回顾卡，放入事实列表里 3 个可核对点。

收尾 / CTA

用回顾卡结束「危机集：原因 → 系统 → 人的影响 → 杠杆」，列出 3 条定时引用；评论区征集下一子角度。旁白须原创——只复用节拍，不复用原片台词。

参考片对照

多参考时按「对题片段密度」分配时长，默认不要均分。
参考 C65iqOSCZOY：保留定时节拍，去掉广告/片尾求订阅。
参考 17kBVfGjI8c：保留定时节拍，去掉广告/片尾求订阅。

原创化建议

TTS 旁白原创；画面下三分标注片名与时间戳作研究引用。
不要粘贴主持人梗、赞助口播或片尾固定 CTA。
优先使用带时间戳的具体事实，避免空泛的「专家说」。
时间轴/事实里没有的主张：删掉，或明确标成你的假说。

参照片

Explained | World's Water Crisis | FULL EPISODE | Netflix C65iqOSCZOY
Earthquakes explained (explainity® explainer video) 17kBVfGjI8c

方法

yt-dlp VTT 人工字幕（上传者提供，非自动/ASR）→ 全文按 60–90 秒切段（超长视频关键词定位）→ 选题级编辑综合。仅结构参考；旁白须原创。