“人口金字塔”概念、定义、翻译-科学时代

单词	人口金字塔
释义	人口学词汇手册人口金字塔 population pyramid
随便看	matted staple matte fall matt effect matte finish（镀锡板的） Matteo Ricci Matteotti Affair matter matter matter matter matter matter matter matter matter Matterania matter antimatter phase transition matter cycle on earth surface matter dominated era matter dominated universe matter-energy matter era Matter explosive matter in controversy matter in issue

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。