英语词汇packyear怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	packyear
释义	packyear 简明释义 n.包年：一种量化吸烟量的单位，表示每天吸一包烟持续一年的吸烟量。1包年等于每天吸20支烟一年。
随便看	slow-neutron measurement slow neutron nuclear reaction slow-neutron reaction slow neutron reactor slow neutronreactor slow neutron reactor slow (neutron) reactor slow-neutron region slow neutron resonance absorption slow neutrons slow-neutron scintillator slow-neutron scitillator slow-neutron velocity spectrometer slow neutron yield slow news day slow nova slow off the mark slow of speech slow on slow oneself down slow-onset slow on the uptake slow-operate fast-release relay slow-operate relay slow-operate slow-release relay

英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。