I only know that by observing that the suction cup feet silkworms in order to ensure that they can more firmly adsorbed on the leaves on the mulberry leaves to eat ah!

• 通过观察我才知道，原来蚕宝宝脚上的吸盘是为了保证它们能够更稳固地吸附在桑叶上吃桑叶啊！