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 ta.

• 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。