zài / huán / bǎo / zǔ / zhī / zhōng / tā / yì / zhí / shì / zuì / jī / jí / de / huó / yuè / fèn / zǐ

在环保组织中，她一直是最积极的活跃分子。

In the environmental organization, she has always been one of the most active members.