“预期寿命”概念、定义、翻译-科学时代

单词	预期寿命
释义	人口学词汇手册预期寿命 expectation of life；　life expectancy
随便看	ecology photography ecomaterial e-commerce e-commerce E-commerce e-commerce e-commerce e-commerce e-commerce ecommerce e-commerce application suite e-commerce chain provider e-commerce conspectus e-commerce--e-commerce（EC） e-commerce (electronic commerce) e-commerce (electronic commerce) e-commerce hub e-commerce infrastructure e-commerce Internet market service provider e-commerce modeling language e-commerce modeling language--e-commerce modeling language (EML) e-commerce modeling language (EML) e-commerce network market provider e-commerce standard e-commerce strategy

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。