两侧百叶窗式通风孔，便于空气流通。

On both sides of shutter vents allow air circulation.

这些暗室通风孔在新老建筑中安装都很简单。

These darkroom vents are easy to install in both old and new construction.

杰里从烤架的通风孔塞一些小木片来使火更旺一些。

Jerry forced scrap wood through the vents in the grill to stoke the fire.

打开座位上方的通风孔，调整风向，让风从你面前吹过。过滤后的机舱空气有助于将潜在传染源吹到别处。

Open your air vent, and aim it so it passes just in front of your face. Filtered airplane air can help direct airborne contagions away from you.