She had been unable to sleep for three days because of her 13-week-old son's crying.

由于她13周大的儿子的啼哭，她3天没睡着觉了。

《柯林斯英汉双解大词典》

He found John pacing around the house, unable to sleep.

他发现约翰正在房子里四下踱步，无法入眠。

《柯林斯英汉双解大词典》

Although exhausted, Bridget couldn't turn off her mind. She tossed and turned, unable to sleep.

尽管非常累，布丽姬特的脑还是不能停下来，辗转反侧不能入睡。

youdao

For a long time, in the early hours of the morning, I was unable to sleep.

NEWYORKER: Rat Beach

Being unable to sleep or relax without alcohol or medication are also red flags.

WSJ: Anxiety Can Bring Out the Best

Fyodorov was unable to sleep the next two nights because of a strong flow of thought.

NEWYORKER: Among Animals and Plants