n.学说；理论；原理；意见
In theory, anything could happen. 理论上来说,任何事情都会发生。
Not everyone can understand Einstein's Theory of Relativity. 不是每个人都能读懂爱因斯坦的相对论的。
In his book, he explained the operating theories of computer in detail. 在他的书中,他详细阐述了计算机的工作原理。
Mary is full of fascinating theories about men and women. 玛丽对男人和女人充满了迷人的想法。
She has a theory that drinking milk prevents cold. 她有一种说法,认为喝牛奶能防止感冒。
