I could think of nothing but these ventilation shafts.

我只能到这些空气调节，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.

而净化空气的通风也可能秘和阴谋的中心。

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

我认这是一种安全措施，可以防止好奇的城市居民意外触电或从通风坠落。