从理论上说，价格是要标在货架上的。

Theoretically, the price is supposed to be marked on the shelf.

《柯林斯英汉双解大词典》

实现这些目标从理论上说比较容易，但在实践上却相当困难。

Achieving these goals is relatively easy in theory, yet quite difficult in practice.

《柯林斯英汉双解大词典》

从理论上说，这样的器械可以帮助下身瘫痪者重新获得活动能力。

Theoretically, such equipment could help paraplegics regain movement.

《柯林斯英汉双解大词典》

I mean, technically, if I want to personally go out and kill someone because they offend me, that is self possession.

我是说，理论上讲，如果因为别人冒犯我,我就要亲自动手杀了他，这也算自主权。

耶鲁公开课 - 公正课程节选

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 so in theory after just 2 or 3 steps you were in order of magnitude farther along in this counting process than I would be because I'd still be on person literally 3 or 4.

因此从理论上说,经过这样短短的两三个步骤,你们就有了分级次序，比我数数快多了,因为我才数到第三四个人。

哈佛公开课 - 计算机科学课程节选