高深

例句：

1. 1. The book is filled with complex ideas that are hard to understand.
   这本书充满了难以理解的复杂概念。
2. 2.The scientist's research is highly sophisticated and requires a deep understanding of the subject matter.
   科学家的研究非常高级，需要对主题有深入的理解。
3. 3.The artist's work is characterized by its high level of sophistication and complexity.
   艺术家的作品以其高度的复杂性和精致度而著称。