以下链接均来自TED Talk官网，排列顺序与Level里面的Unit出现顺序并不统一。在官网里面可以找到Transcript，方便自主研习。特分享于此，以飨各位英语爱好者。
Level7：
Diana Nyad: Never, ever give up | TED Talk
David Blaine: How I held my breath for 17 minutes | TED Talk
Andrés Ruzo: The boiling river of the Amazon | TED Talk
Malcolm Gladwell: The unheard story of David and Goliath | TED Talk
Tim Urban: Inside the mind of a master procrastinator | TED Talk
Simon Sinek: How great leaders inspire action | TED Talk
Zeynep Tufekci: Machine intelligence makes human morals more important | TED Talk
Hugh Evans: What does it mean to be a citizen of the world? | TED Talk
Rebecca Saxe: How we read each other's minds | TED Talk
Level8：
David Christian: The history of our world in 18 minutes | TED Talk
Michael Murphy: Architecture that's built to heal | TED Talk
Juan Enriquez: What will humans look like in 100 years? | TED Talk
Casey Gerald: The gospel of doubt | TED Talk
Daniel Kahneman: The riddle of experience vs. memory | TED Talk
David Epstein: Are athletes really getting faster, better, stronger? | TED Talk
Sam Harris: Can we build AI without losing control over it? | TED Talk
Hannah Fry: The mathematics of love | TED Talk
Ben Saunders: To the South Pole and back — the hardest 105 days of my life | TED Talk
