“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	air cargo air cargo air cargo clearance system air cargo complex air cargo insurance air cargo liability insurance air cargo terminal air cargo transport air carrier air cast air casting mine air cavalry air cell air cell air cell size air chamber air chamber air change method air change rate air charter air charter movement air check air chemical action air chief marshal air circuit breaker

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