A standard that was difficult to maintain in the walk-in freezer.
Once built, this structure can be inflexible and difficult to maintain.
Their squabbling habits made it difficult to maintain a peaceful home environment.
His gabby remarks often make serious discussions difficult to maintain.
However, these types of businesses can be difficult to maintain.
Having duplicate sources makes it > difficult to maintain the software.
It was difficult to maintain the upper limit of the project without more resources.
Fue difícil mantener el límite máximo del proyecto sin más recursos.
By noon, his fractious mood made it difficult to maintain a pleasant atmosphere.
Al mediodía, su estado de ánimo irritable hacía difícil mantener un ambiente agradable.
As his body aged it became more difficult to maintain an erection.
A medida que su cuerpo envejecía, era más difícil mantener una erección.
They found their unruly lawn difficult to maintain during the summer months.
Encontraron que su césped descuidado era difícil de mantener durante los meses de verano.
With decorative cosmetics is very difficult to maintain this natural line.
Con la cosmética decorativa es muy difícil mantener esta línea natural .
Avoid narrow streets where it's difficult to maintain social distances.
Evita las calles estrechas donde sea difícil mantener la distancia social.
Without a doubt, it is difficult to maintain perfect discipline.
Sin lugar a dudas, es difícil mantener la disciplina perfecta.