该研究设施采用高级生物防护措施，防止转基因细菌泄漏到外部环境。

The research facility employs advanced ___biocontainment measures to prevent genetically modified bacteria from leaking into the outside environment.

这些危险的细菌样本必须在高级别的生物安全实验室中处理。

These dangerous bacterial samples must be handled in high-level ___biocontainment laboratories.