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２１世纪我们将面临更加严厉的环保要求和更加激烈的国际市场竞争，如何采用高新技术改造传统炼铝产业，实现节能、降耗、改善环境，是一个迫切需要解决的问题。
In the 21st century, we will face tougher environmental protection requirements and more intense competition in the international market. It is an urgent issue that how to adopt high technology to transform the traditional aluminum smelting industry so as to save energy, reduce consumption and improve the environment.