“aging population”概念、定义、翻译-科学时代

单词	aging population
释义	教育学词汇手册 aging population 老年人口
随便看	optically-focused beam optically functional material optically functional polymer optically inactive optically infinite-depth water optically perfect reflector optically pumped laser optically shallow water optically stratified water optically thinner medium optically-tracked optical magnetic disk optical magnetic disk opticalman optical mark reader optical mark reader optical mark reader optical mark reader optical mark reader (OMR) optical maser optical maser optical maser action optical maser oscillator optical mask optical material

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。