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1.                 From English-Hindi FreeDict Dictionary ver. 1.6:
                   
   
   
                   
                     
   respirator /ɹɪspˈɪɹeɪtə/ <N>
   1. श्वासयंत्र
         "Respirators are used by aviators at high altitudes."
         "Respiratory diseases such as bronchitis and asthma are very common in India."