帮我把一个中文句子翻译成英文，谢谢

一个人最痛苦的就是等待一样不出现的东西
The most suffering thing for a man is to wait something would not happen forever.

The toughest thing is that you are waiting for something that would never ever exist.

Waiting a non-appearance is a big pain.

Waiting for a non-appearance thing is very painful experience in one's life.

The most miserable is to wait for a thing that never show up.