active solvent

例句：

1. 1.The team is active in promoting cultural exchanges between different countries.
   该团队积极促进不同国家之间的文化交流。
2. 2.The new manager has brought a lot of activity to the office.
   新经理给办公室带来了很多活力。
3. 3. The young scientist is very active in his research work.
   这位年轻的科学家在研究工作中非常活跃。