The problem of testing statistical hypotheses is an old one, and its origins are obscure.
检验统计假设的问题由来已久，其起源已不可考。
The old dreams were very good dreams; they didn't work out, but I'm glad I had them.
音乐有着无与伦比的力量，能将人们凝聚在一起。
不要让任何人告诉你你不能做什么。证明他们是错的。
艺术是我生存的方式。