“Ursa Major cluster”概念、定义、翻译-科学时代

单词	Ursa Major cluster
释义	天文学词汇手册 Ursa Major cluster 大熊星团
随便看	block and repulsion block and tackle block and withdraw block antenna blockboard block book block booking block-booking block booking block bottom block brake block breakwater block bridging block buffer block building blockbuster blockbuster blockbuster blockbuster blockbuster blockbuster（film） blockbusting blockbusting blockbusting blockbusting

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。