基本解释耐尼古丁的同根派生 英汉例句These are tobacco plants, the only natural source of nicotine.这些是烟叶，提炼尼古丁的惟一自然资源。The problem with tobacco is that it contains a drug called nicotine.烟草的问题是它含有一种叫尼古丁的麻醉剂。