That which has necessary existence and not contingent existence.

存在的东西总有其存在的理由。

youdao

A finite being was not capable of explaining the presence of the idea of an infinite God apart from his necessary existence.

有限的是无法解释的存在的想法是无限的上帝除了他的必要的存在。

youdao

Thus the necessary existence of God both makes knowledge possible and guarantees truth concerning those facts that can be clearly delineated.

因此，必要的上帝存在两种可能使知识和真理的保证这些事实，可以明确界定。

youdao

Israeli proponents of the settlements say the existence of the communities is necessary for the survival of the Jewish State.

VOA: standard.2009.09.07

For, as Rutherford has shown the assumption of the existence of nuclei, as those in question seems to be necessary in order to account for the results of the experiments on large angle scattering of the alpha rays.

因此卢瑟福,提出了原子核存在的假设，这些关于问题的假设对于,解释阿尔法粒子的,大角度散射是有必要的。

麻省理工公开课 - 固态化学导论课程节选

Increasingly, he became convinced that religion, in some form or other, was a necessary part of human existence.

ECONOMIST: Leszek Kolakowski

These subjects equip learners with social skills necessary not only for peaceful co-existence and non-violent conflict resolution or management but also for community development and poverty reduction.

UNESCO: Adult Learning and Illiteracy Elimination Programme

They argue that recent aerodynamic, electronic and material development advances in Japan point to the existence of the appropriate technical skills necessary for Japan to build the FS-X without U.S. participation.

CENTERFORSECURITYPOLICY: The US-Japan FS-X Fighter Agreement: Assessing The Stakes