“preventive service”概念、定义、翻译-科学时代

单词	preventive service
释义	商务词汇手册 preventive service 海关缉私署
随便看	backup backup backup backup backup backup backup backup backup backup and data archiving backup authority backup battery backup browser backup copy backup copy back-up credit back-up data back-up data backup diskette backup file backup file backup force backup group backup hierarchy backup media

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。