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》

但在实践上，该裁定的影响还无可得知。

But the practical impact of the decision is unclear.

youdao

至少在实践上，古希腊人也知道其他的声学原理。

The ancient Greeks were aware of other acoustical principles, at least empirically.

youdao

I have a final question for you: do you feel that Princeton university is on the right trajectory in answering the question of just university?

我再问你们最后一个问题，你们认为,普林斯顿大学是否在正确的轨道上发展么？,我指的是在公正的实践这一方面？

普林斯顿公开课 - 人性课程节选