complex capital structure

例句：

1. 1.The company's financial structure is complex, making it difficult to understand.
   公司的财务结构复杂，难以理解。
2. 2. The problem was so complex that no one could solve it.
   这个问题太复杂了，没有人能解决。
3. 3.The architecture of the building is complex, requiring a detailed plan.
   这座建筑的建筑风格复杂，需要详细的规划。