不眠

In a sentence

• 昨夜因为工作的事情，我经历了一个不眠的夜晚。

  Last night, due to work matters, I went through a sleepless night.

  不眠 is used here as an adjective describing the night, indicating sleeplessness.

• 这位诗人写了一首关于不眠的诗，表达了他的情感。

  This poet wrote a poem about sleeplessness, expressing his emotions.

  不眠 is employed as a noun representing the concept of sleeplessness.

• 不眠不休地完成了任务后，他终于可以休息了。

  After completing the task without sleep or rest, he could finally rest.

  不眠 is part of a verbal compound emphasizing the action of not sleeping.