Then comes the chlorophyll-rich palisade mesophyll, where the bulk of photosynthesis occurs.

然后是富含叶绿素的掌状中叶，大部分的光合作用在这里发生。

Above the palisade mesophyll and below the spongy mesophyll are epidermis cells, which produce a waxy coating called the cuticle.

掌状中叶以上和海绵状中叶以下是表皮细胞，它们会产生一种称为角质层的蜡质涂层。

These cells are called palisade mesophyll and they're packed full of chlorophyll, the green chemical that plants use to absorb light.

这些细胞被称为掌状中叶，它们饱含叶绿素——植物用来吸收光线的绿色化学物质。