classical theory of distribution

例句：

1. 1. The classical music is still popular today.
   古典音乐至今仍然很受欢迎。
2. 2.He studied classical literature in college.
   他在大学学习过古典文学。
3. 3. The classic novel has been adapted into many films.
   这部经典小说已经被改编成许多电影。