To show a disregard for something means that you ignore it or do not take account of it.
Whoever planted the bomb showed a total disregard for the safety of the public.
不论安置炸弹的是谁,都显示出对公众安全的全然漠视。
disregards , disregarding , disregarded
If you disregard something, you ignore it or do not take account of it.
He disregarded the advice of his executives.
他对主管们的建议置之不理。