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The ants cultivate dozens of these fungus gardens throughout the colony.
螞蟻在整個蟻群里 栽種了幾十個這種霉菌園
This is what they eat.
這是它們賴以維生的食物
The system is so efficient
這個系統很有效率
that a single colony can have five million members.
光是一個蟻群 就能養活五百萬個成員
But the fungus is also dangerous.
但霉菌也很危險
As it grows it releases carbon dioxide that could asphyxiate the entire colony.
霉菌生長時會釋放二氧化碳 可能害整個蟻群窒息而亡
The ants' way of dealing with this danger is ingenious.
螞蟻應付這種危險的手段 非常巧妙
They construct their nest
它們蓋的巢穴
so that it has an automatic air-conditioning system.
附有自動空調系統
The outer surface is so shaped that the slightest breeze
外部表面的造型特殊 只要淡淡清風
sucks out staleair through these central vents.
就能從中央氣孔吸出滯悶空氣
At the same time, fresh air is drawn down through the outer vents,
同時透過外部氣孔 把新鮮空氣吸下去
right into the heart of the nest.
直接灌入巢穴核心
Our own societies have existed for thousands of years
人類自己的社會存在了幾千年
but insect societies have lasted for millions.
但昆蟲社會 已經延續了數百萬年
