n.學說；理論；原理；意見

In theory, anything could happen. 理論上來說,任何事情都會發(fā)生。

Not everyone can understand Einstein's Theory of Relativity. 不是每個人都能讀懂愛因斯坦的相對論的。

In his book, he explained the operating theories of computer in detail. 在他的書中,他詳細闡述了計算機的工作原理。

Mary is full of fascinating theories about men and women. 瑪麗對男人和女人充滿了迷人的想法。

She has a theory that drinking milk prevents cold. 她有一種說法,認為喝牛奶能防止感冒。