difficult to comprehend

References in classic literature ?
Tom and Ned found it difficult to comprehend all the rapid Spanish spoken by their host, but they managed to understand some, and his eloquent gestures made up the rest.
'Will it ever be worse than this?' was a question I had often heard asked, when everything was sliding and bumping about, and when it certainly did seem difficult to comprehend the possibility of anything afloat being more disturbed, without toppling over and going down.
It is sometimes difficult to comprehend the struggles that some families face on a daily basis and it is not good enough to turn a blind eye and pay no mind.
It's really difficult to comprehend why anyone would want to cause such destruction, for no personal gain whatsoever!
This being the case it is difficult to comprehend the reasoning leading to Monk's dismissal.
It is very difficult to comprehend the logic behind his statement, but it is absolute stupidity.
In a touching tribute, Mrs Heywood's heartbroken family said they are 'finding it difficult to comprehend life without her.'.
It is still difficult to comprehend why a certain place is kept out of reach of Internet in the digital era.
Since 2016, Chinas ban on commercial ivory trade has been a powerful catalyser to curb demand for wildlife products, making this decision difficult to comprehend. In the face of biodiversity and wildlife being under threat all around the world, member states, scientists and activists need to present a united front and voice a strong objection to all trade in endangered wildlife products.
Marjorie says she finds it "difficult to comprehend" how someone could leave her lying seriously injured in the road.
Given the existential importance of water as a national resource it is difficult to comprehend the myopic incompetence that has led to this parlous state of affairs.