This little bacteria [that] used to be a small, subdued microbial activity in the soil biological activity, has grown now into a monster.

这小小的细菌曾经那么微不足道，只是土壤生物活动中微小的一环，现在却成了一个大麻烦。

They defined organic agriculture as an ecological production management system that promotes and enhances biodiversity, biological cycles, and soil biological activity.

他们将有机农业定义为促进和增强生物多样性、生物循环和土壤生物活性的生态生产管理系统。

This little bacteria used to be a small, subdued microbial activity in the soil biological activity, has grown now into a monster.

这种小细菌曾经是土壤中生物活动受抑制的小型微生物，现在已经成长为怪物。