/ˈkloʊsli ˈɡɑrdɪd/ – Phrase
Definition: được bảo vệ nghiêm ngặt.
A more thorough explanation: “Closely (tightly) guarded” refers to a situation where something is under strict and vigilant protection or surveillance to prevent unauthorized access, disclosure, or harm.
Example: The confidential information was closely guarded by the company’s legal team to prevent any unauthorized access.