I could think of nothing but these ventilation shafts.

我只能想到这些空筒，却想不出什么别的东西。

Walking through the town, you'll see chimneys and ventilation shafts poking out of the ground.

穿过小镇，你会看到烟囱和通风从地面探出头来。

And a ventilation shaft that clears the air can become the center of mysteries and conspiracies.

而一个清理空的通风口可能会成事件和阴谋论的中心。

I figured it was a safety measure to prevent curious urbanites from accidentally electrocuting themselves or falling down a ventilation shaft.

我想这是了防止好奇的城市居民不小心触电或掉进通风口而采取的安全措施。