为什么蜻蜓的眼睛是复眼？[^1^]内容如下：

蜻蜓的眼睛是复眼，也就是由许多小眼组成的眼睛。复眼可以让蜻蜓看到更广阔的视野，甚至可以看到自己的背后。复眼也可以让蜻蜓分辨出不同的颜色，包括紫外线。复眼对于蜻蜓这样的飞行昆虫来说，是非常有用的，因为它们可以更好地捕捉猎物，躲避敌人，和找到配偶。

: Why do dragonflies have compound eyes?
: Compound eyes are eyes that are made up of many small eyes. Compound eyes allow dragonflies to see a wider field of view, even behind themselves. Compound eyes also allow dragonflies to distinguish different colors, including ultraviolet. Compound eyes are very useful for flying insects like dragonflies, because they can better catch prey, avoid enemies, and find mates.
: https://www.nationalgeographic.com/animals/article/130719-dragonflies-insects-science-eyes
: https://www.britannica.com/animal/dragonfly