theory
Trung cấp 1 · B1- theory of something the theory of evolution/relativity
- scientific/economic theory
- The theories were tested on a sample of the population.
- theory about something He developed a new theory about the cause of stomach ulcers.
- theory on something theories on human behaviour
- theory behind something She has written a book explaining the theory behind her art.
- according to a theory According to the theory of relativity, nothing can travel faster than light.
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