回形针PaperClip

05:54

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[Eng Sub] Vol.085 Where does our garbage go?

13:25

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Vol.120 二维码的秘密

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回形针 ×《年轮 2020》：丈量 2020

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Vol.172 麻醉医生如何让你活着醒来？

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Vol.145 HIV 自救指南

07:40

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PaperClip Vol.114: How to conduct ATC for 1.4 billion people

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Vol.112 What exactly is blockchain?

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Vol 036 如何设计一个逼真的三维模型 | 回形针

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Vol.133 如何科学地消灭蚊子？

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Vol.132 如何科学测量你的体温？

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Vol.105 How to manage the library scientifically?

05:05

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PaperClip Vol.050: How do you control the train traffic for 1.3 billion people