“留存”概念、定义、翻译-科学时代

单词	留存
释义	新闻与传播词汇手册留存 hold for release
随便看	training psychology training psychology training reactor training regulation training resource training role training sample training school training set training style training system training system training technique training time training transfer training type athlete training wall training wall training works training works training workshop train integrated management system （TIMS） train larynx train loading forecast train of gears

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。