theory

The professor explained the complex theory to the students.

教授向学生们解释了这个复杂的理论。

Einstein was a mathematical genius whose theories changed science forever.

爱因斯坦是一位数学天才，他的理论永远改变了科学。

The theory was based on a false assumption.

该理论是基于一个错误的假设。

Darwin's theory of evolution explains how species change over time.

达尔文的进化论解释了物种如何随时间而变化。

There is not a shred of evidence to support the theory.

没有任何证据支持这一理论。

It was difficult for the child to comprehend the complex scientific theory.

这个孩子很难理解那个复杂的科学理论。

The scientist was able to refute the old theory with new evidence.

这位科学家能够用新的证据驳斥旧的理论。

The fundamental postulate of this theory is that all people are equal.

这一理论的基本假定是人人生而平等。

They conducted a small-scale study to test the new theory.

他们进行了一项小规模研究以验证新理论。