“第二语言”的概念、定义、翻译、参考文献-科学参考

单词	第二语言
释义	第二语言 Encyclopedia 文学第二语言习得释 second language第二语言一个人在学会第一种语言之后所学的另一种语言。简称二语。
随便看	urban rail transit network planning urban rail transit operation and maintenance Urban rail transit platform urban rail transit regulatory planning Urban Rail Transit Sidings（auxiliary lines） urban rail transit signal urban rail transit station urban rail transit subgrade construction urban rail transit turnout urban rail transit vehicle urban rail water supply and drainage system urban rail water supply for fire protection and extinguish fire urban rank-size rule Urban Reformin urban regime urban regime theory urban regionality urban registered unemployed urban registered unemployment rate urban rehabilitation urban relict natural community urban remote sensing urban renewal urban renewal and regeneration Urban Renewal in Canada

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。