classic hydrodynamics

例句：

1. 1.The painting is a classic work of art.
   这幅画是一幅经典的艺术作品。
2. 2. He wore a classic suit for the occasion.
   他穿着一件经典的西装出席了那个场合。
3. 3. Classic literature has been studied for centuries.
   经典文学已经研究了几个世纪了。