A simple statistic shows why mining group Rio Tinto has set its sights on becoming the next king of copper: an electric car needs 42kg of the metal — almost three times more than a traditional combustion engine vehicle.
一个简单的统计数据显示了矿业集团力拓(Rio Tinto)为何着眼于成为下一个铜之王：一辆电动汽车需要42公斤铜，几乎是传统内燃机汽车的三倍。
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