According to the researchers, 33 percent of the general population has at least one insomnia symptom.
据研究人员介绍，总人口中33%的人都至少有一种失眠的症状。
2
And even scientific enquiry itself, our science-indeed, what does all scientific enquiry in general mean considered as a symptom of life?
就连科学都要自问，我们的科学——真的，科学质疑通常被认作是生活的一个征候？
3
Some officials, like Mr. Francis, say it is a symptom of summer recess, a tough economy that has left many teenagers out of work and a general sense of anxiety and malaise.