(小小解释一下为什么这个电影叫做swan song:A swan song is the final performance of an actor, singer, composer, poet, or the like. According to folklore, swans sing most beautifully before they die, and hence this phrase came to be used to describe someone who was leaving in style. 天鹅挽歌是指演员,歌手,作曲家,诗人等等的最后一个表演。有民间传说称天鹅会在逝去之前唱最唯美的歌,因此得来 天鹅挽歌,用来形容一个人的收官之作。本作Swan Song是指代Cameron在离去之前留下的最后一个作品,克隆人Jack)