请问句子中 词组意思

问题描述:

请问句子中 词组意思
It's difficult to the point of impossibility for the average readers under the age of forty to imagine high-quality arts criticism could be found in most big-city newspapers.
请问在这里it's difficult to the point impossibility是什么用法?不是be difficuld to do sth.

It's difficult to imagine 在这里