These conducting bronchioles receive oxygenated blood from the bronchial arteries of the systemic circulation.

这些传导性细支气管接受来自体循环的支气管动脉血液；动脉血含氧量丰富。

Air is conducted through smaller and smaller bronchioles for about 15-20 generations, and collectively they're known as conducting bronchioles, receiving O2 from bronchial arteries.

空气经过越来越小的细支气管传导大约15-20级；它们统称为传导性细支气管，从支气管动脉中获取O2。