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26 삽화
편리한 도구속의 과학원리들 - Season 1 Episode 20 에피소드 20
In an attempt to beat Dodo Island, the islanders construct carts to deliver their cargo more efficiently to prospective buyers. All goes well until Olive and Troy, with a cargo of paper, reach a steep hill which they race down uncontrollably. The Inventor helps them add brakes. Meanwhile, Brenda and Pilbeam struggle to get a lovesick mammoth to take a bath. Topics covered: heat, friction, brakes, lubrication.
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