recursive state estimation

例句：

1. 1. The algorithm is designed to be recursive, meaning it can be broken down into smaller sub-problems.
   这个算法被设计成递归的，意味着它可以分解为更小的子问题。
2. 2. The process of debugging involves repeatedly testing and correcting errors, which is a form of recursion.
   调试过程涉及反复测试和纠正错误，这是递归的一种形式。
3. 3. The teacher explained the concept of recursion by demonstrating how it could be applied to solve complex problems.
   老师通过展示如何将递归应用于解决复杂问题来解释这个概念。