air·lock
noun/ˈeəlɒk/
/ˈerlɑːk/
- a small room with a tightly closed door at each end, which you go through to reach another area at a different air pressure, for example on a spacecraft or submarine
（航天器或潜艇等的）气闸舱，气密过渡舱 - a bubble of air that blocks the flow of liquid in a pump or pipe
气塞