classical mathematical analysis

例句：

1. 1. The classical music isstill popular today.
   古典音乐至今仍然很受欢迎。
2. 2. He studied the classics in ancientGreece.
   他在古希腊学习了经典著作。
3. 3. Theclassic novel was written by Jane Austen.
   这部经典小说是由简·奥斯汀写的。