“age composition”概念、定义、翻译-科学时代

单词	age composition
释义	旅游词汇手册 age composition 年龄组成；年龄结构
随便看	bright and dark bands bright annealing bright band bright band bright beer bright bridge bright brown coal bright coal bright coal bright component bright core bright-dark ratio bright dip bright drawing bright electroplating brightener brightener brightening brightening agent brighten the mind and restore the nature bright field bright field bright-field illumination bright flesh bright flesh

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。