Some are looking to clean their air of conventionalpollutants, which could encourage some companies to switch to low - or no-carbon alternatives.
有些国家准备将传统污染物从空气中清除出去，这将鼓励一些公司转移到低碳或无碳替代方案上来。
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As such, this "backward laser" could potentially provide measurements of pollutants and other molecules in environments that would be hard or impossible to study with conventional laser systems.
The exhaustion of conventional fossil fuels, increasing of combustion-generated pollutants, and the raise in the price cause the development of new energy sources more and more important.