晚上不睡觉的人可以用英语表达为 "insomniac"。这个词来自拉丁语 "insomnia"，意思是"失眠"。
例句：
He's an insomniac and has trouble falpng asleep every night. (他是个失眠者，每晚都很难入睡。)
She's been an insomniac for years and has tried everything to get a good night's sleep. (她失眠多年，也尝试了各种方法来获得良好的睡眠。)
Insomnia can have serious effects on a person's health and well-being. (失眠会对一个人的健康和幸福产生严重影响。)
例句：
He's an insomniac and has trouble falpng asleep every night. (他是个失眠者，每晚都很难入睡。)
She's been an insomniac for years and has tried everything to get a good night's sleep. (她失眠多年，也尝试了各种方法来获得良好的睡眠。)
Insomnia can have serious effects on a person's health and well-being. (失眠会对一个人的健康和幸福产生严重影响。)