Demorgan's theorem
[计] 真根定理, 反演定理, 德摩根定理
🧩 词语组成解析
🗣️ 情景例句
Sam, this is Susan. Sam
我是Susan。
Neither fish nor flesh (nor good red herring).
非驴非马；不伦不类。
He ate simply, and never ate meat. He rose early in the morning and worked at his wheel, making cotton thread.
他吃得很简单，且从不吃肉。他每天早晨早早就起床，转动纺车，纺棉纱。