active amyl stearate

例句：

1. 1. The team is activein promoting environmental conservation.
   该团队积极推广环境保护。
2. 2. She is an active member of thecommunity club.
   她是社区俱乐部的积极成员。
3. 3.The new policy is designed to encourage activelearning.
   新政策旨在鼓励主动学习。