/liːɡəl ˈɛfɪkəsi/ – Phrase
Definition: 1. hiệu quả pháp lý, hiệu lực pháp lý;
2. thực tại pháp lý.
A more thorough explanation: Legal efficacy refers to the ability of a law, contract, or legal document to produce the intended legal effects and consequences. It signifies the capacity of a legal instrument to be legally binding and enforceable in accordance with the relevant laws and regulations.
Example: The legal efficacy of the contract was questioned due to the lack of signatures from all parties involved.