/ˈdəbl krɪmɪˈnælɪti/ – Phrase
Definition: hành vi phạm tội kép (phạm tội theo luật pháp của nước bàn giao tội phạm và theo luật pháp của nước tiếp nhận tội phạm).
A more thorough explanation: Double criminality is a legal principle that requires an act to be considered a crime in both the requesting and the requested jurisdiction in order for extradition to take place. In other words, extradition can only occur if the conduct for which extradition is sought is criminalized in both the requesting and the requested jurisdictions.
Example: In extradition cases, double criminality requires that the offense for which extradition is sought must be considered a crime in both the requesting and the requested countries.