吐痰tǔ tán 基本例句 expectorationspitexpectorate 在许多国家，当众吐痰属不雅行为。In many countries it is considered rude tospitin public. 随地吐痰是不允许的。It's not allowed tospiteverywhere. 当众吐痰是不礼貌的行为。It's the bad manner tospitin public. 在公共场合随便吐痰是不礼貌的。It's rude tospitin public.