a final performance or effort (especially before retirement)
swan song的用法和样例:
例句
用作名词 (n.)
This book is believed to be his swan song. 认为这本书是他的最后一部作品。
All the tickets have been sold for the singer's performance in Paris this week-the public clearly believes that this will be her swan song. 这位歌唱家本星期在巴黎演唱的全部门票都销售一空——显然,公众认为这将是她最后一次告别演出。