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The person who invented the moistureproof bar is truly a genius
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Video Source: www.youtube.com/watch?v=5ywazciaqyU
【If there is any infringement, please contact us to delete it】 • The Mechanical Science Channel delves into the mysteries of machinery and unpacks technological principles. Join us to admire the beauty of mechanics and embrace the charm of technology, embarking on a journey of wisdom together! • #Popularscience #mechanical
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