Alright.Primary insomnia, again, are people who can't sleep enough because of the health condition.
好吧。同样,原发性失眠是指由于健康状况导致睡眠不足的人。
英语百科
Insomnia
Insomnia is a sleep disorder. People with insomnia have trouble sleeping: difficulty falling asleep, or staying asleep as long as desired. While the term is sometimes used to describe a disorder as diagnosed by polysomnographic or actigraphic evidence, this is often practically defined as a positive response to either of two questions: "do you experience difficulty sleeping?" or "do you have difficulty falling or staying asleep?"