Article 33

In the thirty-third article, the question is raised whether the body of Christ in this sacrament is not in a place. (See also, S.Th., III, q. 76 a. 5.)

It is not true to say this because the body of Christ is in the place where an altar or a church is. (See S.Th., III, q. 75 a. 1 ad 3, which clarifies that it is in these places sacramentally.) But it is true that the body of Christ is not in the sacrament as in a place because it is not compared to the sacrament as located in a place since it is not commensurate with it in regard to its own dimensions. (In S.Th., III, q. 76 a 3 ad 3, this is worded as, "the body of Christ is not compared with this sacrament by reason of dimensive quantity, but by reason of its substance."
See also III, q. 75, a 4.)