Sentence examples for it proves difficult from inspiring English sources

In particular, beef was selected for its high content of haemoglobin (about 0.1 mg/mL in beef muscle [ 7]) to mimic well-vascularised tissues (with human muscle-like chromophores); however, due to its lack of uniformity, it proves difficult to repeat the experiments, affecting reproducibility.

Before we meet in London, it proves difficult to learn much about the author.

However, it proves difficult to transfer this error estimation procedure to Galerkin meshfree methods.

Will Adam give up on trying to perfect Hannah after it proves difficult?

We have spent the past week organizing a surprise party, but it proves difficult.

Natural forests widely serve as "safety nets" for the rural poor, but it proves difficult to raise producer benefits significantly.

Alas, it proved difficult to find.

However, with this method it proved difficult to control the temperature and the oven exploded.

But it proved difficult to get banks, transport operators, or even council departments on board.

It proved difficult to starve large numbers of civilians without total control of territory.

Certainly it proved difficult for Shabalov to break through White's defenses.