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。
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。
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