The air passage is called the air bleed.

空气通道叫通气孔。

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When winter arrives, my fingers split and bleed in the cold air.

在寒冷的冬天，我的手指会裂开流血。

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BLEED valve, a valve in the pneumatic system for air supply from the engine or auxiliary power unit to the pneumatic manifold.

引气活门，气源系统内，使来自发动机或辅助动力装置的空气进人气源支管的活门。

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The major averages kept rising into nose bleed thin air, but the Ag names were struggling to stand upright.

FORBES: POT Is Going Up In SMOKE