I knew with Snape I was working as a double agent, as it turns out, and a very good one at that.

I knew with Snape I was working as a double agent, as it turns out, and a very good one at that.

我知道和斯内普在一起，我是一个双重间谍，事实证明，我在这方面做得很好。

-- Alan Rickman 艾伦·里克曼