He's not mad—just a little simple.

他不是疯，只是智力稍低。

《牛津词典》

"To begin with," said the Cat, "a dog's not mad."

“首先，”猫说，“狗是不疯的。”

youdao

Inventors are not mad scientists.

发明家不是精神不正常的科学家。

《牛津词典》

The narrator claims that he is not mad, yet reveals that he is a murderer.

VOA: special.2009.02.02

Yeats spoke of the poem as a mad song, maybe not a kind of mad song we would--it's not what we would think of as a mad song, necessarily.

叶芝说这是首狂诗歌，也许不是我们所讲的狂诗歌,不一定是我们所认为的狂诗歌。

耶鲁公开课 - 现代诗歌课程节选

Let's hope that all the changes I mad have not introduced a syntax error.

希望我要做的所有这些变化,不会有什么句法错误。

麻省理工公开课 - 计算机科学及编程导论课程节选

Barry Nalebuff and Ian Ayres are not mad, but distinguished professors at Yale University, the former of economics, the latter of law.

ECONOMIST: Now that's a good idea

In the heyday of the East India Company, the single biggest cause of death of the company's employees was not mad dogs or scorpions, but the familiar drug of alcohol (aggravated by bad diet and lack of exercise).

ECONOMIST: Doing business in dangerous places

Hoisting himself up on a step ladder above the noisy elbow-to-elbow crowd, he gave a rousing speech laced with his trademark wit and intriguing brand of Republican populism ("I'm a conservative, but I'm not mad at anybody, " he likes to say).

CNN: Huckabee shakes up GOP race in South Carolina