We'll call him Mr. X.

我们会称他为X先生。

youdao

Mr. X said that over the past two decades he's tried many times to learn to drink but failed.

X说，过去二十年里他很多次尝试学着喝酒，但还是不行。

youdao

Mr X exhibits in several galleries.

先生在几个艺术馆举办展览。

youdao

Well, we want to know, after 2041, let's say 2045, is there somebody who's a person, call him Mr. X.

我们想知道，2041年后，假设是2045年吧，会不会存在一个人，我们称他为X先生。

耶鲁公开课 - 死亡课程节选

He still incurred -C because he ran and he also has a cost of |x-y| because he doesn't like Mr. Y winning.

他同样有-C的收益因为他参加了竞选,且他还有|x-y|的成本,因为他不喜欢Y先生获胜

耶鲁公开课 - 博弈论课程节选

I'm not asking Is this person stage Mr. X the same person stage as SK 2007.

我不是在问,这个阶段的X先生,和2007年的我是不是同一阶段。

耶鲁公开课 - 死亡课程节选

Mr Hurst said Mr X, who was secretly filmed by the former intelligence officer, told him he had been targeted because of his work in Northern Ireland.

BBC: Christopher Jefferies

"We called them Mr. X and Mr. Y, " she says.

FORBES: Magazine Article

"It's obvious that if Mr. X from ABC company is deciding pay questions about Mr. Y from DEF company and vice versa, a certain clubby cooperation can ensue, " says Jauhal.

FORBES: CEO Pay