abbreviation for chemical, biological, radiological, nuclear: used to refer to dangerous substances such as poisonous chemicals, harmful bacteria, or radiation, especially when used as weapons of attack

When the incident involves CBRN, specialized resources must be activated quickly. 当事件涉及核生化时，必须迅速动员专业资源。

Senior officers have stressed that CBRN attacks are only one type of potential terrorist threat. 高级官员强调，化学、生物、辐射和核攻击只是潜在的恐怖主义威胁的一种类型。