Hard materials like beeswax, used on the stomach and skin, could help keep out water and seal the pores.

像蜂蜡这样的坚硬材料，用在胃和皮肤上，可以帮助阻止水分和封闭毛孔。

Guard cells seal up pores in the leaves.

保卫细胞封闭了叶子上的毛孔。