“车票有效期”概念、定义、翻译-科学时代

单词	车票有效期
释义	交通运输工程词汇手册车票有效期 ticket validity time
随便看	close-ultraviolet radiation close up close-up close-up button close-up (CU) close-up (CU) close-up filter close-up lens close-up picture close-up ring close-up shot close-up（CU） close-up（CU） close velocity close vic close view close vowel close writs closing closing closing closing closing closing account closing address

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。