noun 下载 🔗分享 拼音 A phonetic script or romanization system for a language spoken in the People's Republic of China. Examples : "My Chinese textbook uses py to help me pronounce the characters correctly. " 我的中文课本用拼音来帮助我正确地发音汉字。 language phonetics writing communication system linguistics 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 年包数 (smoking) A unit for measuring the number of cigarettes a person has smoked previously; it is calculated by multiplying the average number of packs of cigarettes the person smokes per day by the number of years the person has smoked. Examples : "My doctor asked about my smoking history, specifically my py, to assess my risk for lung disease. " 医生询问了我的吸烟史,特别是我的年包数,以评估我患肺部疾病的风险。 medicine amount statistics 与AI对话词汇游戏阅读练习