蜜蜂为什么偏爱六边形？

Bees are little engineers. 蜜蜂是天生的小工程师。 Their homes are made of hexagons. 它们的小房子，全是六边形的。 A hexagon has six straight sides. 六边形呀，有六条直直的边。 Hexagons fit together with no gaps. 六边形拼起来，一点缝都不留。 They use less wax and keep more honey. 它用蜡最少，装蜜却最多。 Bees never study math, but they know it well. 蜜蜂没学过数学，却很懂数学。 Their hives are tiny perfect buildings. 它们的蜂巢，是小小的完美建筑。