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The Secret Genius of Modern Life3 시즌4 에피소드

Doorbell

ScienceTechnology
English
The smart doorbell is a top tech success. Hannah visits Ring in LA to explore its history, from a tinkerer, Soviet spy tech, and a student's thirst to security staple.
국가:
UK
연출:
Fay Finlay
출연:
Hannah Fry
등급:
Mature ThemesCoarse Language
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