noun🔗Share防腐剂，保鲜剂。 Any agent, natural or artificial that acts to preserve, especially when added to food."The bread stayed fresh for a week because it contained preservatives. "因为面包里含有防腐剂，所以一个星期后仍然很新鲜。foodsubstancechemistryChat with AIVocabulary GamePractice Reading
