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How Recycled Plastic Becomes a Backpack
回收塑料如何变成双肩包
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Used plastic bottles go to a recycling center.废弃塑料瓶被送往回收中心。
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Workers sort and clean them carefully.工人仔细分类并清洗它们。
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Machines crush the bottles into small flakes.机器将瓶子压碎成小片。
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Heat melts the flakes into soft threads.加热使碎片熔化成柔软的丝线。
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These threads are spun into strong yarn.这些丝线被纺成结实的纱线。
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Factories weave the yarn into fabric.工厂将纱线织成布料。
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Tailors cut and sew the fabric into bags.裁缝将布料裁剪并缝制成包。
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One backpack can use fifty bottles.一个背包可使用五十个瓶子。