"In matters of faith and morals, affecting the building up of Christian doctrine, that is to be held as the true sense of holy Scripture which holy mother the Church has held and holds, to whom it belongs to judge the true sense and interpretation of holy Scriptures. Therefore no one is allowed to interpret the same sacred Scripture contrary to this sense or contrary to the unanimous consent of the Fathers" (De Filius 2).
Essentially, you can interpret Scripture only as the Catholic Church decrees, based upon tradition and previous teachings. Per Vatican I, there is but one interpretation, and that is the one of the Catholic Church.
There are plenty of Protestant equivanents. For example, sola scriptura - which is actualy sort of funny in that this interpretation is nothing more than tradition to which one must adhere lest one be called heritical.
Did you look at the other link?
This means that we cant approach Scripture as if it were something that needs to be interpreted by us, but rather quite the opposite -- we need to let Scripture interpret us, our lives, and our world, he explained. To read the world in light of Scripture, as opposed to Scripture in light of the world, is the hallmark of a Christian reading of the Word of God.