text: Good, better, yes.
  In the Mass we celebrate the memorial of Jesus's sacrifice.
  I now see that you've quoted the Council of Trent to someone else. I didn't need to consult anything. But I believe my answer accords with what the Church teaches.  I'll check later.
  Of course we are also doing other things in the Mass. In the first place, it is a community of Christians meeting in fellowship to give thanks and praise. Where two or three are gathered in His name, there He will be. This we believe.