noun
ADJECTIVE
▪ adequate , good , proper
▪
Inspectors checked that there was adequate ~.
▪ inadequate , poor
▪ artificial , mechanical
▪ natural
VERB + VENTILATION
▪ allow , give , provide
▪
Holes up the sides of the jacket give good ~.
▪ improve
VENTILATION + NOUN
▪ system
▪ duct , hole , pipe , shaft , tube