non-existent

英 [ˌnɒn ɪɡˈzɪstənt]

美 [ˌnɑːn ɪɡˈzɪstənt]

adj.  不存在的; 不真实的

复数：non-existents　

Collins.1

牛津词典

adj.

• 不存在的；不真实的
  not existing; not real
  1. a non-existent problem
     不存在的问题
  2. ‘How's your social life?’ ‘Non-existent, I'm afraid.’
     “你的社交生活如何？”“我恐怕没有社交生活。”
  3. Hospital beds were scarce and medicines were practically non-existent .
     当时医院病床紧缺，药物根本所剩无几。

柯林斯词典

• ADJ 不存在的
  If you say that something isnon-existent, you mean that it does not exist when you feel that it should.
  1. Hygiene was non-existent: no running water, no bathroom...
     卫生根本谈不上：没有自来水、没有卫生间。
  2. You'll take everything you're offered yet your own generosity is virtually non-existent.
     你倒是来者不拒，照单全收，可你自己实际上却一毛不拔。

双语例句

• Jane began to rebuild her social life which had been non-existent since her marriage
  简开始重新建立自己自结婚以来便陷于沉寂的社交生活。
• Wildlife is virtually non-existent in this area.
  野生动物在这个地区几乎不存在。
• It is an error to extract a value using a non-existent key.
  试图析取从一个不存在的关键字中读取值会导致错误。
• This policy, they say, is at best confused and at worst non-existent
  有人说这项政策往好里说是混乱不堪，往坏里说就是形同虚设。
• Escapes are rare, and drugs and contraband almost non-existent.
  逃狱基本很罕见，毒品和其他违禁品也根本不存在。
• I think the most as long as the following reasons: 1, Ineffective supervision departments or non-existent;
  我想最只要有以下几方面原因：1、监督部门不力或者根本不存在；
• Sanitary conditions in the camps are non-existent and cholera, typhoid and other epidemics could break out any day.
  军营里根本没有卫生条件，霍乱、伤寒和其他传染病随时可能爆发。
• Reported when trying to erase, rename or open a non-existent file.
  当尝试的时候，报告抹掉，重新命名或者开启一个非存在的文件。
• An attempt was made to end a non-existent transaction.
  试图终止一个不存在的事务。
• This means that privileges can be granted to non-existent user and group accounts with the information being stored in the database.
  这意味着，可以把权限和数据库中存储的信息授予不存在的用户和组帐户。