noun🔗Share尼古丁 An alkaloid (C10H14N2), commonly occurring in the tobacco plant. In small doses it is a habit-forming stimulant; in larger doses it is toxic and is often used in insecticides."My grandfather used to smoke cigarettes, and nicotine was a major reason he struggled to quit. "我爷爷以前抽烟，而尼古丁是他戒烟路上最大的阻碍之一。compoundsubstancechemistrymedicineplantinsectbiologyChat with AIVocabulary GamePractice Reading
noun🔗Share尼古丁，烟碱 Tobacco, cigarettes"He is addicted to nicotine."他对烟草上瘾了。substancemedicinecompoundchemistryChat with AIVocabulary GamePractice Reading
