/ˈʌndər ˈɔrdərz/ – Phrase
Definition: 1. khi thi hành chức trách nhiệm vụ;
2. theo lệnh, theo mệnh lệnh.
A more thorough explanation: “Under orders” refers to being subject to instructions or commands given by a person in authority, typically within a formal or official context. It implies that the individual is obligated to follow the directives provided by the person issuing the orders.
Example: The soldier acted under orders from his commanding officer during the military operation.