This is like the glazing that lock opened inside the room that closes in, fresh air came in, but the pest such as much dirt, fly and mosquito also comes in accordingly.

这就好像在一间封闭的房间内打开了紧闭的玻璃窗，新鲜空气进来了，但大量的灰尘、苍蝇和蚊子等害虫也跟着进来。

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Air lock - a small room with interlocked doors, constructed to maintain air pressure control between adjoining rooms (generally with different air cleanliness standards).

气闸—带连锁门的小房间，用于保持临近房间之间的气压控制(通常所述临近房间的洁净级别不同)。

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The air lock installation is the primary objective of the Atlantis mission, with the two-room chamber allowing space station crews to venture from the station in NASA spacesuits without the assistance of visiting shuttles.

CNN: Air lock installed on space station