adj.不存在的
existent───n.生存，存在；艰难或无聊的生活方式；adj.现存的；生存的
non───adv.非，不；n.（Non）（美、泰）嫩（人名）
self-existent───adj.独立存在的；自存的
non statement───非声明
non sequitur───不合理的推论或结论；n.<拉>不合逻辑的推论
non adherent───非粘连的
non filtrato───未过滤
non toxic───无毒
non negotiable───[财]不可转让的
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。
Manners nowadays in metropolitan cities like London are practically non-existent. ───如今在如伦敦这样的大都市中，礼仪实际上是不存在的。
This policy, they say, is at best confused and at worst non-existent.───他们说这项政策说好听点是混乱不清，说不好听点就是根本不存在。
My concentration levels were never up to much at the best of times, but modern technology has left them almost non-existent.───我的注意力水平从未在情况最佳时发挥到最好状态，但是现代科技已经让它们几乎消失殆尽了。
Known here as "shanzhai ji" , or bandit phones, China's gray market handset industry was virtually non-existent just a few years ago.───“山寨机”的生产，在几年前还只是萌芽状态。
It's as if the local populations were non-existent, or at least hiding in their homes whenever I happened to wander into town.───无论我什么时候走到镇上，当地的人们都好像不存在似的，或者只是躲在他们的家中。
My self-esteem was non-existent. I felt there was no way for me to be happy.───我没有了自尊，觉得自己无法快乐起来。
Though the quantity was small (only a few cows, it appears so far) and the health risk said to be non-existent, it raises suspicions.───虽然投放量很少（现在看来只有几头牛）并且不会损害健康，但是这引起了怀疑。
Mark is not possible for a non-existent at that time the company's stock, or he had not thought of creative transferred to another person.───马克不可能将一家当时根本不存在的公司的股权或者他还没有想到的创意转让给他人。
The roads were empty, tourists non existent.