von Bruna Vocaturo Vor 4 Jahren
332
Mehr dazu
von Ragubavan Sathurtheha
von farahnaz nazari
von Jake McClam
von Brayden Brazeau
exchange oxygen with carbon dioxide
they forces the air straight to the alveolus
forces the air to breath
conveys and cleans the air and expels the solid parts
recive air and regulates the sound of the voice
recive the air
humidify
purify
REGULATION