insomnia

例句：

1. 1. She was unable to sleep last night because of the noise from the neighbors.
   她昨晚因为邻居的噪音而无法入睡。
2. 2.He had a terrible insomnia that made it difficult for him to fall asleep at night.
   他患有严重的失眠症，导致他晚上难以入睡。
3. 3.The doctor prescribed her medication to help her overcome her insomnia.
   医生给她开了药来帮助她克服失眠症。