In computer security, any weakness or flaw existing in a system, the susceptibility of a system to a specific threat attack or harmful event, or the opportunity available to a threat agent to mount that attack. 在计算机安全学中，存在于一个系统内的弱点或缺陷，系统对一个特定的威胁攻击或危险事件的敏感性，或进行攻击的威胁作用的可能性。
The condition or state in which human beings exist in a meaningless, irrational universe wherein people's lives have no purpose or meaning. Used chiefly with the. 无价值，无意义人类生存在一个无意义或非理性世界的情况或状态下，在那里人类的生活既无目的又无意义。主要与the连用
The universe exists in space. 宇宙存在于太空。
The question of how many souls exist in heaven is academic. 天堂里有多少灵魂这一问题纯属空谈。
