The most important thing was to have a-- a full face mask, which we applied on-site, with positive pressure, to enable them to breathe and to relax them enough to not feel any anxiety during the process.

最重要的是每个人都要佩戴一件封闭式面具，他们在现场佩戴了这种面具，然后用力按压，以使他们能够呼吸，并且要扔他们保持放松，以免在整个过程中感到焦虑。