“Chalcolithic Age”概念、定义、翻译-科学时代

单词	Chalcolithic Age
释义	人类学词汇手册 Chalcolithic Age 红铜石器时代，铜石并用时代
随便看	collector collector collector collector collector collector collector collector collector collector collector bag collector diffusion isolation (CDI) collector electrode collector film collector filter collector insolation collector lens collector of solar radiation collector of taxes collector ring college college admission college affairs college applicant college banner

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。

Chalcolithic Age