"difficulty remains" is a correct and usable phrase in written English.
It is typically used to convey that a challenging situation or problem still exists. Example: After several months of hard work, the team was able to overcome many obstacles. However, the difficulty remains in securing funding for the project.
This clearly demonstrates that the level of difficulty remains stable in time, with the easiest items at baseline remaining the easiest items after the intervention.
But the difficulty remains.
Perhaps the original difficulty remains.
But even if it does, a major difficulty remains: that most people are lunatics when it comes to their child.
But an important difficulty remains, one not mentioned in the article: a limited supply of affordable helium.
Despite the usefulness of the FA technique, a difficulty remains: it is a complex task to model the causal relationship between several parameters or conditions within a system.
A triumphant Olympics fits perfectly with his campaign narrative that the United States, despite its current economic difficulties, remains a nation on the up.
The Archdiocese of Boston and a few other dioceses have acknowledged financial problems because of reduced giving by parishioners, yet because diocesan finances are kept secret by many bishops, the severity of the church's financial difficulties remains unclear.
The sense of disappointment was echoed by Woods's peers, with Padraig Harrington saying the American, for all his recent difficulties, remains a big attraction for both the public and players.
Mr. Adams said that physical evidence of the business difficulties remains on the houses, including uncarved or partly carved stonework, the strange, partly carved window lintels on the house at 457 West 144th Street, and interior woodwork made of plain-sawn instead of quarter-sawn oak.
One hardware hangover for Jolla — a crowdfunded tablet that had to be canceled following the company's Series C financial difficulties — remains, but Jolla has previously said it will refund all customers who do not receive the tablet.
