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The elevator
por
Discusses the basic principles of the elevator, the relationship between the skyscraper and the elevator, how heavy weights were lifted in ancient times, and the computerized elevators with "brains".
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- ● children's books
the long version
Discusses the basic principles of the elevator, the relationship between the skyscraper and the elevator, how heavy weights were lifted in ancient times, and the computerized elevators with "brains".
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"Discusses the basic principles of the elevator, the relationship between the skyscraper and the elevator, how heavy weights were lifted in ancient times, and the computerized elevators with "brains"."
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