Translate the following English sentence to French:
"It is vitally important that the Commission is able to make the proposals for the project' s third and fourth phases into clear legislative proposals as soon and as effectively as possible."
Il est d' une importance primordiale que la Commission puisse transposer en propositions législatives concrètes les conclusions des troisième et quatrième phases du projet, et ce le plus rapidement et le plus efficacement possible.