英语词汇“pack-year”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	pack-year
释义	pack-year pack-year n (Medicine) a measure of the amount of cigarettes a person has smoked over an extended period, equal to one packet of 20 every day for one year pack-year pack-year The consumption of a pack of cigarettes daily for a year (approximately 365 packs of cigarettes annually). The number of pack-years that people smoke correlates closely with the amount of damage that tobacco does to their hearts, lungs, and other organs.
随便看	priority level priority list priority list of hazardous substances priority mail priority mail parcel center priority management objective priority memory access priority message priority national intelligence estimate priority national intelligence objective priority national intelligence objectives priority need priority of debts priority of effort priority of immediate mission requests priority of lien priority of satisfaction of claims priority of support priority of tax lien priority operational objectives priority output writes, execution processors & input readers priority packet priority phase priority placement program priority planning grid risk evaluation

英语词典包含2567994条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。