“activity”概念、定义、翻译-科学时代

单词	activity
释义	环境科学与工程词汇手册 activity 活度；放射性
随便看	spondylodymus spondylodynia spondylodynia spondylolisthesis spondylopathy spondylopyosis spondyloschisis spondylosis spondylosyndesis spondylus sponge sponge sponge sponge cake sponge cake sponge dough sponge gourd sponge gourd sponge gourd sponge iron powder sponge-like particle sponge pudding sponger sponge rock sponge tree

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。