狗尾续貂的英文：
[Literal Meaning]
dog/tail/join/sable
to add a dog's tail to the sable coat

[解释]
拿不好的东西接在好的东西后面，前后两部分非常不相称。

[Explanation]
a wretched sequel to fine work

[例子]
很多人认为高鄂写的《红楼梦》的后四十回是狗尾续貂。

[Example]
Many people think that the last 40 chapters of A Dream of Red Mansions that were written by Gao E are actually a wretched sequel to fine work.