C2If you agree with or believe something in principle, you agree with the idea in general, although you might not support it in reality or in every situation.原则上,大体上,基本上
In principle I agree with the idea, but in practice it's not always possible.我大体赞成这个想法,但实际上这并非总是可行。
They have approved the changes in principle.他们基本上批准了这些变革。