xī / yān / huì / chǎn / shēng / duō / zhǒng / zhì / ái / wù / zhì / duì / shēn / tǐ / wēi / hài / hěn / dà吸烟会产生多种致癌物质,对身体危害很大。Smoking produces many carcinogens and is very harmful to the body.