That is pretty heavy going.
I should have liked to read all the evidence, much of it fascinating, but some is heavy going and time did not allow me to read it all.
Unfortunately, this is very heavy going.
However, it was heavy going following much of what he said.
They involve reading the basic economics books and learned journals which we all find heavy going and full of disagreement.
He could not understand them and found them heavy going.
I think she is a great stayer in heavy going.
Indeed, he found it pretty heavy going, to put it mildly.
