spectral narrowing

例句：

1. 1.The study of spectral narrowing has been a hot topic in recent years.
   近年来，光谱狭窄的研究一直是热门话题。
2. 2. The new technology allows for spectral narrowing, which can greatly improve the efficiency of the system.
   新技术允许光谱窄化，这可以大大提高系统的效率。
3. 3. In the context of climate change, spectral narrowing refers to the reduction in the amount of light that reaches the Earth's surface due to increased atmospheric absorption.
   在气候变化的背景下，光谱窄化是指由于大气吸收增加而导致到达地球表面的光量减少。