Shutting down a spacecraft engine, opening doors:
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The motor boat starts, moves
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The drone of the engine of a floating large
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Start, jamming, Water engine
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The boat starts, moves slowly
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Motorboat Competitions
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Raising and lowering the sail
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The boat swims past
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Opening,, Engine compartment of a ship
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They shovel coal into the boiler on the
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Moves, Motor boat starts
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The boat swims past fast
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Opening, Shutting down a spacecraft engine
★★★★★