From this information, he was able to confirm the existence of a pattern.

从这些信息中，他能够确认一种模式的存在。

youdao

She conjectured the existence of a completely new species.

她推测有一个全新物种存在。

《牛津词典》

A century earlier, Henry Cavendish had noted the existence of a residual gas when oxygen and nitrogen are removed from air, but its importance had not been realized.

一个世纪前，亨利·卡文迪什注意到当空气中的氧气和氮气被除去，还有其他剩余气体存在，但人们还没有认识到它们的重要性。

youdao

Since ancient times, thinkers including the Greek astronomer Ptolemy believed in the existence of a huge continent on the South Pole.

VOA: special.2009.06.03

I announced on the first day of class that I don't, myself, believe in the existence of a soul.

第一节课上,我就声明,本人并不相信灵魂的存在

耶鲁公开课 - 死亡课程节选

Use "Is there" whenever you want to find out about the existence of a location,

当你想知道一个地点存在的情况时，就用“Is there”句型，

Is there 课堂 - SpeakingMax英语口语达人

But absence of evidence is even less likely to prove the existence of a threat.

FORBES: Anonymous Sources Provide No Evidence of Iran Cyber Attacks

To date, both the Israeli government and AIPAC have denied the existence of a partisan divide.

CENTERFORSECURITYPOLICY: Republicans, Democrats & Israel

The theory predicts the existence of a new particle, which also carries Prof Higgs' name.

BBC: Peter Higgs: honour for physicist who proposed particle