state stack

例句：

1. 1.The state stack is a concept in computer science that represents the current state of a system.
   状态堆栈是计算机科学中的一个概念，表示系统当前的状态。
2. 2.In the state stack, each object has a unique index, which helps to keep track of its position in the system.
   在状态堆栈中，每个对象都有一个唯一的索引，这有助于跟踪其在系统中的位置。
3. 3. The state stack is used to manage the flow of data between different components of a system.
   状态堆栈用于管理系统的不同组件之间的数据流动。