theback of beyond

例句：

1. 1. I'm not sure where the back of beyond is, but it seems to be a very long way away.
   我不确定“无底深渊”在哪里，但看起来它非常遥远。
2. 2. The back of beyond is often used as a metaphor for something that is difficult or impossible to reach.
   “无底深渊”常用作比喻，表示难以达到或不可能到达的事物。
3. 3. The back of beyond can also refer to a place where people go to escape from their problems.
   “无底深渊”也可以指人们逃离问题的地方。