Thứ Năm, 12 tháng 10, 2017

NPR News: After A Failed Launch, Smart Shoe Benefits From A Reboot

After A Failed Launch, Smart Shoe Benefits From A Reboot
Hahna Alexander initially invented a shoe that could charge a battery, but no one wanted to use it. "You have to invent something that people can't live without," she says.

Đọc thêm tại NPR
at October 12, 2017 at 08:59PM
Health & Science

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