fault freedom的用法和樣例：
例句
- So some effective steps must be taken to improve fault toleration of the systems.
因此，必須採用有效的故障容錯方法以提高系統的容錯性能。 - In this paper, federated filter theory is briefly introduced, four typical structures are introduced, and their characteristics of fault tolerance are analyzed.
論文首先介紹了聯邦卡爾曼濾波理論，分析比較了不同結構的聯邦濾波器的特點和容錯性能。
