2:17
Posted 11 May 2015
Energy of human body heat

Energy of human body heat

or
продолжительность: 2:17
Posted on 11 May 2015
Description
Ann Makosinski, 16 years old, invented a flashlight that runs solely on human body heat.
Recommended words
ambient -
to enter -

Puzzle English

Самообучение инсотранным языкам

info@puzzle-english.com Логотип