n.烟渣，残烟丝；老糊涂；傻瓜，笨蛋
adj.老糊涂的；愚蠢的，笨的
He steered the car with the other hand, knocking the dottle out into the ashtray. 他一只手开着汽车,另一只手把烟斗里吸剩的烟丝磕到烟灰缸里。
