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，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》

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》

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

When we separated banking from investment banking, on the theory the investment banking had natural proclivity to get from another folly to do it.

当我们把银行业务从投行分离出去的时候，由于理论上说投行的本性决定了其容易犯错误,决定了其容易犯错误。

斯坦福公开课 - 经济学课程节选