I could think of nothing but these ventilation shafts.

我只能想到气调节筒，却想不出什么别东西。

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.

而净化气通风也可能成为神秘和阴心。

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

我认为是一种安全措施，可以防止好奇城市居民意外触电或从通风坠落。