The ratio changed when Umbridge became Defense Against the Dark Arts professor in OP - but only until Dumbledore brought in Firenze after the sacking of Trelawney.是什么意思_The ratio changed when Umbridge became Defense Against the Dark Arts professor in OP - but only until Dumbledore brought in Firenze after the sacking of Trelawney.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句