adieux

例句：

1. 1.As the sun sets, we say adieux to each other.
   随着太阳落山，我们彼此道别。
2. 2.The couple bids adieux to their friends before leaving for the airport.
   这对夫妇在离开机场前向朋友道别。
3. 3.The old man waved farewell to his children as they boarded the train.
   老人挥手向孩子们道别，他们登上了火车。