Hold on to your bungie cord ding, don't jump yet...... here is how the Roman Catholic Catechism explains it:
"As sacrifice, the Eucharist is also offered in reparation
for the sin of the living and the dead and to obtain
spiritual or temporal benefits from God.
Every time this mystery is celebrated, "the work of
our redemption is carried on."
The Eucharist is thus a sacrifice because it re-presents
(makes present) the sacrifice of the cross."
Catechism of the Catholic Church, op,cit., para.1414, p. 395
In case you haven't noticed, the "official" Roman Catholic teaching, right from their own "Catechism" directly contradicts the Word of God. When Jesus died on the Cross, ding, He proclaimed: "It is finished" (John 19:30). Furthermore ding, the Greek word used is 'tetelestai'. It was a Greek accounting term that meant "paid in full."
The work of our salvation is complete, ding!!! It was Jesus Christ, not the Roman Catholic Church, that purchased our redemption once and for all on the Cross. Jesus is NOT being perpetually sacrificed in the Eucharist as the RCC falsely teaches. Partaking in the Eucharist does NOT appease God, nor does it atone for sin, ding!