Chapter 4 Data Structure Requirements: 1. Three reasons for using data structures are efficiency, abstraction, and reusability. 2. The properties of Stack, Queue, and Tree 3.掌握常用英汉互译技巧 《什第机专出美语 4-3Chapter 4 Data Structure 计算机专业英语 4-3 Requirements: 1. Three reasons for using data structures are efficiency, abstraction, and reusability. 2. The properties of Stack, Queue, and Tree 3. 掌握常用英汉互译技巧