Lotus leaves repel water because they are covered with minuscule waxy nodules that stop water molecules bonding with a leaf's surface tissues, meaning those molecules bond with each other instead.

荷叶疏水，是因为它们表面覆盖着微小的蜡质结节，会阻止水分子与叶面组织结合，因而水分子只能彼此结合。