Level 2 · word 838 of 20,000
theory
/ˈθɪri/
American
- n. 理论, 学说, 原理
- Definition
- n. a set of ideas that explains why something happens or how it works
- Example
- The scientist explained her theory about how birds migrate.
- 这位科学家解释了她关于候鸟如何迁徙的理论。