all very well/fine/good idiom
好像是不错（用来表示其中有问题）
You say that something is all very well/fine/good if it seems good by itself but you think that there are problems connected with it
It's all very well to want to get rich quickly, but it isn't usually that easy. 想一下子发财倒是没什么不对，但是通常没有那么容易。