两年前，人们决定解决这个问题：建造一个轮胎回收厂。在这个厂中，那些废旧的无用的轮胎会通过处理铺设成新的体育场赛道。
Two years ago they decided to solve this problem by opening a tire recycling factory where they could turn old needless tires into a new stadium track surface.
早在这个夏天我去了日本一家熔炼厂，那是全世界最大的熔炼厂。
Earlier this summer I was at a smelter in Japan, the largest titanium smelter on the planet.
我走访的第一家工厂是一个装配厂，在这里所有的零件汇聚起来组装成成品。
The first factory I visited was an assembly plant where all the components come together to form a finished product.
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