“second language--second language（L2）”概念、定义、翻译-科学时代

单词	second language--second language（L2）
释义	语言学词汇手册 second language（L2）二语，第二语言
随便看	square inch square integrable square integrable function square integrable martingale square knot square lattice square law square law square-law compensation square law model square lift net square log square mapsubdivision square matrix square matrix square maze square metre squareness ratio square netter square net winch square nut square of opposition square of relation square pattern square piano

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。

second language（L2）