classical optimization

例句：

1. 1. The classical music is still popular today.
   古典音乐至今仍然流行。
2. 2.He wore a classic suit for the wedding.
   他穿着一件经典的西装参加了婚礼。
3. 3.Classic literature has a long history and rich content.
   经典文学有着悠久的历史和丰富的内容。