四种基本力（万有引力、电磁力、强核力和弱核力）中的每一种都有一个理论上的旋钮。

Each of the four fundamental forces (gravity, electromagnetism, and the strong and weak nuclear forces) has a kind of theoretical knob.

youdao

但是，标记它是建立在理论上的。

But, note that this is based on theory.

youdao

这个挑战不是理论上的——它很实际。

This is not a theoretical challenge–it’s designed to be quite practical.

youdao

It was the ideal embraced by priests and nuns, and it was the ideal to which all Christians theoretically at least were in a position to aspire to.

这是牧师和修女们所拥护的理想，这也是基督教徒们理论上,至少是理应渴望的理想。

耶鲁公开课 - 弥尔顿课程节选

As long as it's reversible, you know what the efficiency has to be, and in principle, you could break it down into a bunch of steps that you could formulate as isothermal and adiabatic.

只要这个循环过程是可逆的，你们知道效率是多少，从理论上说，可以将总过程,分解成一系列绝热,和等温的小过程。

麻省理工公开课 - 热力学与动力学课程节选

And inside of each of these cups is a different weight so that in theory all of these cups are different weights.

每个杯子里的东西重量都不同,这样，从理论上看，这些杯子的重量都不同。

哈佛公开课 - 计算机科学课程节选