Words
cough [kɔf] 名词，意为“咳嗽，咳嗽声，咳嗽病” 常用短语：dry cough 干咳 whooping cough 百日咳 eg： Graham began to cough violently. 格雷厄姆开始剧烈咳嗽。 小练习：看图写单词。 ——————
cough
