To reunify is to join the parts of something together again, especially a country that was divided. It is the verb that sits next to the noun reunification: leaders reunify a country; a country is reunified. It is a formal, news-and-history word. For families, old friends, and bands, English speakers nearly always say reunite, not reunify. Though actually, some writers mix the two, but in careful use reunify is for states, systems, and big organisations, not for hugging at the airport.

使重新統一（多指國家或體制）