underlying assumption的用法和样例：
例句
- The basic principles and underlying assumptions of each theoretical approach were discussed in the previous chapters.
前几章讨论了各种理论方法的基本原理和基本假设。 - This corresponds to the basic assumption of demand theory that consumers attempt to maximize utility.
这就相当于需求理论中的基本假设是消费者企图功能最大化。
