The paO2 level in his blood was dangerously low.

The PaO2/FiO2 ratio is an important indicator of lung function.

The paO2/FiO2 ratio is an important indicator of lung function.

The PaO2 level in his blood was dangerously low.

I saw many paopaos at the park.

The paopao is a traditional single-outrigger canoe of Tuvalu.

Paoting is a city in China.

Paotow is a dated form of Baotou.

Paoking is a synonym of Shaoyang.

Paokang is a beautiful name.