legal action
noun [ U ] uk/ˌliː.ɡəl ˈæk.ʃən/ us/ˌliː.ɡəl ˈæk.ʃən/
法律行动
the act of using a lawyer or a court to help settle a disagreement, etc. that you have with a person or an organization
He threatened to take legal action against me over a comment I had made about him on my blog. 他威胁说因为我在博客上的评论，他会对我采取法律行动。