/ˈsʌbdʒɪkt ˌmætər əv ˈækʃən/ – Phrase
Definition: đối tượng tranh chấp.
A more throughout explanation: Subject-matter in controversy refers to the specific issue or dispute that is the focus of a legal case or proceeding. It is the main subject or topic of disagreement between the parties involved in the legal dispute.
Example: The subject-matter in controversy in the lawsuit is the ownership of the property in question.