/ˌθɪəˈrɛtɪkəl/
concerned with the ideas and principles on which a particular subject is based, rather than with practice and experiment 理论上的
a theoretical approach
理论研究方法
theoretical physics
理论物理
The first year provides students with a sound theoretical basis for later study.
第一年为学生以后的学习奠定坚实的理论基础。