1.deputy
n. 代理人,代表
adj. 副的;代理的
仿 He delegated his responsibilities to his deputy.
2.aquiver
adj. (多用作表示)颤抖的,兴奋的
仿 His face was aquiver with fear.
3.Summary
When Harry complained to Nick about his troubles, Harry saw the agent of Filch, Mrs. Norris.Nick advised Harry to leave. But it's too late. Filch was very angry because Harry 's Quidditch robes dripping mud all over the place.