hū xī qì
ventilator (artificial breathing apparatus used in hospitals)
rén gōng hū xī
artificial respiration (medicine)
mì bì shì xún huán zài hū xī shuǐ fèi xì tǒng
closed-circuit rebreather scuba (diving)
bèi yòng èr jí tóu hū xī qì
backup regulator
octopus (diving)
shàng hū xī dào gǎn rǎn
upper respiratory tract infection
èr jí tóu hū xī qì
(diving) regulator
demand valve
shuì mián hū xī zàn tíng
central sleep apnea (CSA)