Translate the following English sentence to French:
"The Commission has obtained some commitments which have helped this agreement. These commitments enable us to specify that "significant" means that at least 30% of the costs of the cleaning of holds in ports must be covered in a general sense, whether or not these port facilities are used."
La Commission a obtenu quelques compromis qui ont facilité cet accord, qui visent à préciser que, par "significatif", on entend qu'au moins 30 % des coûts de nettoyage doivent être couverts d'une manière générale et ce, que les installations portuaires soient utilisées ou non.