# 一個可以由五萬隻個體構成的蜂群,在工作時經由運動的肌肉,就能製造出相當的熱度。蜜蜂甚至必須花費許多精力來使熱氣散掉,整個蜂群才不至於因為高溫而中暑。對此,工蜂會到最近的小水塘汲水回來,讓它在蜂巢裡蒸發來降溫。至於空氣的流通,則是藉助牠們幾千次的振翅拍動來進行,如此一來蜂房之間才能得到較涼爽的風。——《動物的內心生活》
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