/dɪˈkleər ən ˈɪntrəst/ – Phrase
Definition: Tuyên bố một mối quan tâm.
A more thorough explanation: to say publicly that you have a right in something, or are somehow connected with something in a way that means that you might prefer one party to case, opinion, or option etc more than another
Example: He had to declare an interest in the construction project as he owns part of the river.