“PSA（public service announcement）”概念、定义、翻译-科学时代

单词	PSA（public service announcement）
释义	新闻与传播词汇手册 PSA（public service announcement）〈美〉公益服务特别通告
随便看	rate rate rate rate rate rate rate rate rate rate rate rate rate rate rate rateability rateable rateable value rateable value rate-adaptive asymmetric digital subscriber line (RADSL) Rate-adaptive Digital Subscriber Line Rate-adaptive Digital Subscriber Line (RADSL) rate addition rate against US dollars rate agreement

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。