The system is expensive and, moreover, difficult to implement.
This technique is often presented as cumbersome and difficult to implement.
The actual tests can be expensive and difficult to implement.
In practice, however, such provisions were difficult to implement.
This latter holistic vision has proven the most difficult to implement.
The system proved difficult to implement and worried more than one potential buyer.
The proposed reforms are interesting from an educational standpoint but difficult to implement.
In terms of practicality, your solution is interesting but difficult to implement quickly.
This a very interesting course but maybe a little difficult to implement.
Voici un cours intéressant, mais un peu difficile à mettre en œuvre.
First of all, the first method is extremely difficult to implement.
Premièrement, la première méthode est extrêmement difficile à mettre en œuvre.
The official infringement procedure is protracted and difficult to implement.
La procédure officielle d'infraction est longue et difficile à mettre en œuvre.
Reforms are difficult to implement without support from those in high places.
Les réformes sont difficiles à mettre en œuvre sans le soutien des hautes sphères.
Even those provisions that exist have proved inadequate or difficult to implement.