Definition: when someone smokes a cigarette or regularly smokes cigarettes Level: A1
这个餐厅里禁止吸烟。
___Smoking is not allowed in this restaurant.
我爷爷戒烟已经十年了。
My grandfather gave up ___smoking ten years ago.
吸烟会导致很多健康问题。
___Smoking can cause many health problems.
