the act of spitting (forcefully expelling saliva) 同义词：spit, spitting,
the process of coughing up and spitting out
例句与用法
1.
The silences widened ; the expectoration marvellously increased 他们吐痰，越吐越厉害。
2.
For treatment of chronic bronchitis , bronchial asthma and emphysema for bronchodilation and expectoration 治疗慢性支气管炎、支气管性哮喘、支气管扩张及咳出的组织气肿
3.
Method : resolving phlegm effects of the different stir - baked slices were evaluated by the excretion of phenol red in mice and the amount of expectoration drainage in rats 方法：考察了紫菀生品及酒洗、蜜炙、清炒、蒸制、醋炙等不同炮制方法的饮片对小鼠气管酚红排泌量的影响和对大鼠气管排痰量的影响。
4.
Chronic bronchitis is a condition associated with excessive tracheobronchia mucus production sufficient to cause cough with expectoration for at least 3 months of the year for more than 2 consecutive years 由于气管、支气管粘液分泌过多，引起咳嗽咯痰， 1年中至少有3个月并连续2年以上者，称为慢性支气管炎。
5.
Battle royal was waged , amid the smoking of many cigarettes and the expectoration of much tobacco - juice , wherein the tramp successfully held his own , even when a socialist workman sneered , " there is no god but the unknowable , and herbert spencer is his prophet . 堂皇的战争开始了，抽了许多香烟，吐了许多斗烟唾沫，流浪汉坚守阵地，获得了成功，尽管有个相信社会主义的工人讥笑说： “没有上帝，只有不可知之物，赫伯特斯宾塞就是他的先知。 ”
6.
The chinese subsidiary shanghai longhua hospital , professor hui - yong zhang : " old chronic bronchitis , " which is a very high incidence of the lung disease , the symptoms of recurrent respiratory tract infection , clinical 多 见 cough with sputum , shortness of breath breathing space and time for a long time qi deficiency , fluid yumao , expectoration powerless 上海中医大附属龙华医院呼吸内科张惠勇教授： “老慢支”是一种发病率非常高的肺部疾病，其症状表现为反复呼吸道感染，临床多见咳嗽多痰、喘息气短、时间久了肺气亏虚、津液亏耗、咳痰无力。
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