Trowa had absolutely no idea what Ehmoi was talking about. Magic words? Why would Ehmoi need a boost to get into a basement, and for that matter, why would he need to climb to get one? Unless it wasn't the sort of boost that Trowa was thinking of. Could be something like a handheld version of the Beam Cannon.
"Ehmoi, is whatever's wrong the reason this building is mostly deserted?"