/ˌnæʧrəlaɪˈzeɪʃənˈ/ – Noun
Definition: nhập quốc tịch.
A more thorough explanation: Naturalization is the process by which a foreign individual becomes a citizen of a country where they were not born. This typically involves fulfilling certain legal requirements, such as residency, language proficiency, and knowledge of the country’s laws and customs, and taking an oath of allegiance to the new country.
Example: After living in the country for five years, Maria applied for naturalization to become a citizen.