還有：交換訂婚戒指---該怎么翻譯？

熱心網(wǎng)友

She became a citizen in 1999.or: She has been a citizen since 1999.交換訂婚戒指 exchange one's wedding rings

熱心網(wǎng)友

什么叫“加入公民”啊？交換訂婚戒指 exchange wedding rings