one-of-a-kind

adj.每种只有一个的

My father was one of a kind,I'll never be like him. 我的父亲很独特，我决不会像他的。

It means one of a kind, or unique. 就是惟一的、独一无二的意思。

You are unique and one of a kind. 你是唯一的也是其中之一。

That means each pottery cat is one of a kind. 大牛:这么说所有的瓦猫都是天下无双的。

To me, you are irreplaceable, because you are one of a kind. 对我而言你是无法。