The theory supposes the existence of life on other planets.

这个理论假定其他行星存在生命。

《牛津词典》

This has led scientists to speculate on the existence of other galaxies.

这就使得科学家推测还有其他星系存在。

《牛津词典》

Atheists deny the existence of God.

无神论者否定上帝的存在。

youdao

In the nineteen sixties, Ray Davis Junior used the mine for his work showing the existence of solar neutrinos.

VOA: special.2009.07.21

In other words, the judgment of beauty does not depend on the existence of the object for its satisfaction.

换句话说，审美不会依赖于,事物自己的存在形式。

耶鲁公开课 - 文学理论导论课程节选

We posit--or the fans of souls posit-- the existence of souls so as to explain something that needs explaining about us.

我们 或者灵魂论的拥护者们假设,灵魂是存在的,这就能解释一些我们自身不解的东西

耶鲁公开课 - 死亡课程节选

This restricted the herders from their natural movements and endangered the existence of the pure Kyrgyz horse.

BBC: The way of the shepherd: Horse trekking through Kyrgyzstan

The existence of innovation-blocking groups has been and continues to be an important barrier to riches.

FORBES: IBM's Watson: Maybe The Doctors Will Strangle It At Birth

When contacted by CNN, however, a Toyota spokeswoman denied the existence of the project.

CNN: Solar cars still a way off