a poor addition to a high-quality whole, often used self-deprecatingly when contributing to someone else's work

您的文章已经写得尽善尽美了，我再加这几句话简直是狗尾续貂。

an inferior or worthless continuation to a literary or artistic masterpiece

很多人觉得这部名著的续作是狗尾续貂，完全没有原作的神韵。