空穴

例句：

1. 1. The hole in the wall was a perfect place for hiding.
   墙上的洞是完美的藏身之地。
2. 2. The professor's lecture left many students with questions they couldn't answer.
   教授的讲座让很多学生提出了他们无法回答的问题。
3. 3. The void between them felt like an unbridgeable gap.
   他们之间的空隙感觉像是一道无法跨越的鸿沟。