卫生部门正在为可能的生物恐怖袭击制定应急计划。

The health department is preparing an emergency plan for possible ___bio-terror attacks.

政府正在加强实验室安全，防止生物恐怖分子获取危险病毒。

The government is tightening lab security to prevent ___bio-terror groups from obtaining dangerous viruses.