fresh air

n.

新鲜空气；

Fresh Air
Fresh air in the 21st century?
Climate Change and Highland Malaria: Fresh Air for a Hot Debate
A breath of fresh air: beyond laboratory studies of plant volatile–natural enemy interactions
Effective depth of fresh air distribution in rooms with single-sided natural ventilation
Apparatus for calculating detection error of fresh air quantity detection device
The hypoxia-inducible-factor hydroxylases bring fresh air into hypoxia signalling.
Energy requirements for conditioning fresh air and the long-term savings with a membrane-based energy recovery ventilator in Hong Kong
Putative biological roles of hydrogen sulfide in health and disease: a breath of not so fresh air?
Evaporative emission canister purge actuation monitoring system having an integrated fresh air filter