除了这些可见的物质外，类似默皮拉的火山同时会释放出二氧化硫，一种能对人类和环境产生多种影响的气体。

In addition to the visible releases, volcanoes like Mount Merapi also give off sulfur dioxide, a gas that can have a variety of effects on people and the environment.

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燃放烟火是一大空气污染的来源，因为燃放烟火会释放出大量的二氧化硫和其他有害气体，如果这些有害气体不能得到控制将降低空气质量。

Setting off fireworks is one of the sources of air pollution because it will produce a lot of sulfur dioxide and other hazardous gases, which may lower air quality if they are emitted unlimitedly.

youdao

燃放烟火是一大空气污染的来源，因为燃放烟火会释放出大量的二氧化硫和其他有害气体，如果这些有害气体不能得到控制将降低空气质量。

Setting off fireworks is one of the sources of air pollution because it will produce a lot of sulfur dioxide and other hazardous gases, which may lower air quality if they are emitted unlimitedly.

youdao