教授：当我说如果那是真的我就是荷兰人的时候，我实际上是再说那不是真的。

Prof. : so when I say if that's true I am a Dutchmen, all I am actually saying is that that's not true.

youdao

“那不是真的，”埃丽卡气愤地说。

"That is not true," Erica said indignantly.

《柯林斯英汉双解大词典》

约翰听到一个谣言，说他的朋友马克在医院里，结果发现那不是真的。

John heard a rumor that his friend Mark was in the hospital, but it turned out not to be true.

youdao

But Gadamer and Heidegger say, "No, that's not true.

但是，伽达默尔和黑格尔说，那不是真的。

耶鲁公开课 - 文学理论导论课程节选

The answer is, "It's not like anything," where that doesn't mean there's something that it's like to be a cell phone, but different from being anything else.

答案就是，什么感觉都不像“,那不是说,作为手机真的有一种感觉，只是和作为其他东西的感觉。

耶鲁公开课 - 死亡课程节选