modal theory的用法和样例：
例句
- It was a failure to scrutinize his own "ideology of freedom" which largely accounts for the deficiencies in Marx's theory and critique of ideology.
至于他是如何从一系列问题重重的假设出发，从而建构出他的意识型态理论和批判，即是本文尝试厘清的课题。 - The objective of using Gaussian in this course is to understand better chemical reactions and transition state theory, in addition to the computations of thermochemistry.
本课程使用高斯的目的，是除了热化学计算，更好了解化学反应和过渡态理论。
