“early-teenager”概念、定义、翻译-科学时代

单词	early-teenager
释义	人口学词汇手册 early-teenager 少年
随便看	track track track track track track track trackage track aging track analysis track-and-guidance laser radar track-and-hold amplifier track angle track angle track angle error track annealing track back trackball track breadth track chamber track chamber track circuit track count track crane track density

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。