Dentist, rinsing the mouth with water, spitting out: Listen & Download Rinsing the mouth with water,, Dentist .mp3 Error! Change your browser, please! ⇓ Download Laboratory, instrument noise ⚠ Hospital, hallway, people’s voices ⚠ Dentist brushing teeth ⚠ An empty cart for the sick ⚠ Heart monitor ⚠ Dentist Suction Tube ⚠ Make a hospital bed ⚠ Hydraulic hospital bed ⚠ Pencil movement, EEG ⚠ Hospital, water filtration system ⚠ Surgery, make incisions ⚠ Blood transfusion apparatus ⚠ ★★★★★