And smokeless products contain the same chemical compounds, including nicotine, that have been linked to heart disease in cigarettes.
无烟烟草制品和普通的烟一样同，有包括尼古丁这类的和心脏疾病有关的化学成分。
2
Tobacco contains more than 1200 kinds compounds that about most of them toxic to humans, especially nicotine, harmful particularly great.
烟草中大约含有一千二百多种化合物，其中大部分对人体有毒，特别是尼古丁，危害尤。
3
The changes of nitrogenous compounds (protein, nicotine and chlorophyll) in burley tobacco leaves during air-curing under 3 different barn humidities controlled artificially were studied.