Sentence examples for been a thorny problem from inspiring English sources

The registration process has been a thorny problem at this camp.

How to deal with the diagnosis and treatment of concussions has always been a thorny problem for the International Rugby Board, the sport's world governing body, and the board will discuss strengthening the rules surrounding concussions this week.

How to obtain the analytic solution of uncertain differential equation has always been a thorny problem.

Fatigue damages in orthotropic steel deck have been a thorny problem that perplexed bridge engineers worldwide for decades.

Sewing in general has been a thorny problem for decades and the Sewbots are some of the first robots to do it without resorting to heavily snatched materials.

Medicare is a thorny problem; Social Security, by comparison, is a cinch.

This is a thorny problem, as complicity in torture is considered such a serious crime, in international law, that immunity is not generally possible.

The description of experimental devices is a thorny problem involving the trade-off between describing quantum systems with enough rigour and yet taking sufficient account of the disorder inherent to manufacturing processes.

MIAMI -- For a modern advertiser, it's a thorny problem.

However, organ rejection is a thorny problem after transplantation, especially acute rejection which is the main cause of early dysfunction and retransplantation [ 21].

Patient groups are now routinely involved in planning clinical trials.The role of placebos in clinical testing was a thornier problem.