在制造疫苗时, 病毒要无害化,但不应破坏其免疫学特性.In making a vaccine, the virus is rendered harmless without destroying its immunologic properties.实现无害化生产的关键环节在于规范企业行为.The key to innocuous production is to normalize the enterprise operations....

“无害化”的英语可以翻译为：[生态]harmlessness ...