The teacher gave an outright explanation of the difficult concept.
The students clamored for the teacher's attention to explain a difficult concept.
Les étudiants réclamaient l'attention du professeur pour expliquer un concept difficile.
Nuclear terrorism is a difficult concept to grasp.
The euro is a difficult concept to grasp.
Women's social status is a difficult concept to define.
Le statut social de la femme est un concept difficile à définir.
Her explanation made the difficult concept much plainer to the students.
Son explication a rendu le concept difficile beaucoup plus clair aux élèves.
But in practice, it's a difficult concept to sustain.
Mais en pratique, c'est un concept difficile à soutenir.
The students were hard put to understand the difficult concept in physics class.
Les étudiants avaient du mal à comprendre le concept difficile en cours de physique.
Composedly, the teacher explained the difficult concept, ensuring every student understood.
Calmement, l'enseignant a expliqué le concept difficile, s'assurant que chaque élève comprenait.
In class, a dawning realization occurred when she finally grasped the difficult concept.
En classe, elle a eu un déclic quand elle a finalement saisi le concept difficile.
An analogy with a familiar song made the difficult concept easier to understand.
Une comparaison avec une chanson familière a rendu le concept difficile plus facile à comprendre.
The teacher was patient when explaining the difficult concept to her students.
L'enseignante a fait preuve de patience en expliquant le concept difficile à ses élèves.
The teacher was at pains to make the difficult concept understandable to her students.
L'enseignante s'efforçait à grand-peine de rendre le concept difficile compréhensible pour ses élèves.