名词中文翻译
中文翻译：烟雾密度
同义词：
['smoke concentration', 'smoke content', 'smoke volume']
例句：
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1. Theair quality in this area is significantly worse than the national average, with a high smoke density.
该地区的空气质量明显低于全国平均水平，烟雾密度高。
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2. The firefighters were forced to evacuate the building due to the high smoke density and toxic fumes.
由于烟雾密度高和有毒气体，消防员被迫撤离了这座建筑。
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3. The study found that the increase in pollution levels was directly related to the rise in vehicle emissions, which contributed to ahigher smoke density in urban areas.
研究发现，污染水平的增加与车辆排放量的增加直接相关，这导致了城市地区烟雾密度的增加。