Reunification is the act of joining parts together again, especially the parts of a country that was split. The famous news example is German reunification: East Germany and West Germany became one country again in 1990. People also talk about the reunification of Korea, which has not happened.

Reunification重新統一(reunification) is the act of joining parts together again是把各部分重新結合在一起的這個動作 especially the parts of a country that was split特別是指一個曾經分裂的國家的各部分 The famous news example is German reunification新聞上最有名的例子是German reunification（兩德統一） East Germany and West Germany became one country again in 1990東德和西德在1990年再度合為一國 People also talk about the reunification of Korea人們也會談到the reunification of Korea（朝鮮半島統一） which has not happened不過這件事還沒有發生

The word feels formal. You will see it in history books and news, not much at the dinner table.

The word feels formal這個字給人的感覺很正式 You will see it in history books and news你會在歷史書和新聞裡看到它 not much at the dinner table飯桌上比較不會這樣說

Though actually, a company or church that split and later joined again can be given this word too, but “split country becomes one again” is the meaning students meet first. It names the event or the process, not a family party.

Though actually不過其實 a company or church that split and later joined again can be given this word too一家分裂後又重新合併的公司或教會，也可以用這個字 but "split country becomes one again" is the meaning students meet first但「分裂的國家重新統一」才是學生最先會遇到的意思 It names the event or the process它指的是那個事件或過程 not a family party不是家庭聚會