“Underground Railway”概念、定义、翻译-科学时代

单词	Underground Railway
释义	历史学词汇手册 Underground Railway （美国）地下铁路（内战前南方奴隶逃往北方自由州或加拿大的秘密路线）
随便看	series of advertisements series of basic parameters series of books series of books series of books issued in a single format series of broadcast series of catastrophes series of concept series of lot series of monographs series of optimum parameters series of preferred number series of strata series of synonyms series of transactions series of underground nuclear test series operation series opposing connection series output system series parallel series-parallel series-parallel circuit series parallel circuit series-parallel circuit series-parallel fuzing system

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。