Sphygmomanometer, measure pressure:
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Nursing room, Hospital, voices
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Dentist drilling teeth
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Dentist rinsing the mouth with water
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Water filtration system, Hospital
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Ventilator, Cardiomonitor
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Pencil movement, EEG
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Throwing a sizzling tablet into a glass,
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Dentist, rinsing the mouth with water,
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Surgical suction device
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Hospital, cardiomonitor, doctors, operation
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Laboratory, instrument noise
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Heart monitor
★★★★★