theory
🇺🇸
/ˈθiːəri/
🇬🇧
/ˈθɪəri/
noun
B1
A set of ideas that tries to explain something.
The theory says that the Earth goes around the Sun.
该理论认为地球绕着太阳转。
B1
The basic ideas that a subject is built on.
We learned the theory of how airplanes fly.
我们学习了飞机如何飞行的理论。
B1
An idea that someone thinks is true but hasn't been proven yet.
The detective had a theory about who did the crime.
侦探对谁犯了罪有一个理论。
translation
理论, 原理, 假设
词形变化
Plural
theories