理论上,旅程应该需要三个小时,但实际上由于道路施工,通常需要四个小时。
___In ___theory, the journey ought to take three hours, but in practice it usually takes four because of roadworks.
总之,理论上你可以找到很多解决这个问题的方法,但实际上,一些未经许可狩猎的人并没有受到惩罚。
To sum up, ___in ___theory you can find a lot of solutions to this problem, but in practice, actually some people who hunt without permission aren't punished.
理论上,项目应该在周五前完成,但延误是常见的。
___In ___theory, the project should be completed by Friday, but delays are common.