active rolling bank

例句：

1. 1. The team is active in promoting environmental conservation.
   该团队积极促进环境保护。
2. 2. She is an active member of the community.
   她是社区的积极成员。
3. 3.The company has been active in research and development.
   该公司在研究和开发方面一直很活跃。