久松教授既不讲英语，也不讲德语。

Professor Hisamatsu spoke neither English nor German.

《柯林斯英汉双解大词典》

我既不知道也不关心他出了什么事。

I neither knew nor cared what had happened to him.

《牛津词典》

她似乎既不惊讶也不担心。

She seemed neither surprised nor worried.

《牛津词典》

The answer that Yeats is giving here is different from saying either "yes" or "no" to that question.

叶芝此处给的答案,既不肯定也不否定。

耶鲁公开课 - 现代诗歌课程节选

Try to tell a story in which this podium exists but this podium does not exist.

试着给我讲一个关于这讲台既存在,但又不存在的故事

耶鲁公开课 - 死亡课程节选

Investment banks are very different in that a pure investment bank does not accept deposits and it doesn't make loans; it's an underwriter for securities.

投资银行是完全不同的,单纯的投资银行既不吸收存款,也不发放贷款,投行是证券承销商

耶鲁公开课 - 金融市场课程节选