US carmaker General Motors has increased its investment in a lithium mine to nearly $1bn as it seeks to secure the long-term supply of a metal that is crucial to the production of electric vehicle batteries.
美国汽车制造商通用汽车公司(General Motors)已将其对一个锂矿的投资增加至近10亿美元，以确保对电动汽车电池生产至关重要金属的长期供应。
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