1. Mutability is a new concept, although its features can be found in traditional access control models and policies.
在传统的访问控制模型和策略中虽有可变的特性，但属性的可变性是一个全新的概念。
2. The scale of urban population has become one of the most important research fields in urban science because of its
mutability and the importance of determining it.
城市人口规模的易变性及界定的重要性使其成为城市科学中重要的研究领域。
3. Finally, in the narrative perspective, Vonnegut perfects the postmodern game through the
mutability of the first person and third person and the parody of Jesus Christ.
最后，在叙述视角上，冯纳格特通过一三人称变换及对耶酥基督的戏仿来完善这一后现代主义游戏。
