Smoke is a mixture of gases, vaporized chemicals, minute particles of ash, and other solids. There is also nicotine, which is a powerful poison, and black tar.
抽烟产生的烟雾是一种混合的气体，包括气化的化学物质，极小的灰末微粒和其它固体，还有毒性很强的尼古丁和黑焦油。
Such ash is less likely to poison water if the body of water is large, as then it can dilute any heavy metals in the ash.
如果水体广阔的话，这样的火山灰是不大可能污染水流的，因为它可以稀释火山灰里的重金属。
Such ash is less likely to poison water if the body of water is large, as then it can dilute any heavy metals in the ash.
如果水体广阔的话，这样的火山灰是不大可能污染水流的，因为它可以稀释火山灰里的重金属。
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