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。
Nicotine is highly addictive, and to quit smoking - especially without help - can be difficult.
尼古丁很容易上瘾，而戒烟——特别是在没有帮助的情况下戒烟——是很困难的。
These children are especially vulnerable to "green tobacco sickness", which is caused by the nicotine that is absorbed through the skin from the handling of wet tobacco leaves.
这些儿童特别容易罹患烟草萎黄病，即处理湿烟叶时因皮肤吸收尼古丁所导致的疾病。
These children are especially vulnerable to "green tobacco sickness", which is caused by the nicotine that is absorbed through the skin from the handling of wet tobacco leaves.
这些儿童特别容易罹患烟草萎黄病，即处理湿烟叶时因皮肤吸收尼古丁所导致的疾病。
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