N-MASS
烟叶;烟草(制品)
Tobacco is dried leaves which people smoke in pipes, cigars, and cigarettes. You can also refer to pipes, cigars, and cigarettes as a whole as tobacco .
例句
Try to do without tobacco and alcohol...
尽量不要抽烟喝酒。
I believe it is time to ban tobacco advertising altogether.
我认为该完全禁止烟草广告了。