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轉寄 列印
第1級人氣樹(0)
人氣指樹
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Everything around us is made of materials. Discover how materials are chosen to make everything from raincoats to skyscrapers to sticky notes and bulletproof vests. Learn about melting, evaporating, mixing, and chemical reactions, then carry out your own easy-to-do experiments with solids, liquids and gases.

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