Definition
To have a very difficult or unpleasant experience, or to be in a situation that feels like it could have resulted in death.
十分痛苦的经历
In the first few years of starting my business, I really went to hell and back.
在创业的前几年，我真的经历了极大的困难。
She had to go through a long and painful rehabilitation process; it felt like she went to hell and back.
她必须经历一个漫长而痛苦的康复过程；感觉就像经历了地狱般的折磨。
After that severe illness, he felt like he had gone to hell and back.
在那场重病之后，他感觉自己像是从地狱走了一遭回来。