n.[植]叶脉；[动]翅脉
In the natural world the nervure of the leaf or the blood vessels under the skin of human being show excellent temperature adjustment capability to the environment. 在自然界中，植物的叶脉和人体皮肤下的血管都是毛细管的自然存在形式，它们都是通过管内流体来调节机体自身的温度与周围环境平衡的成功范例。
The water drops upon the light green leaves, sliding across the nervure, rolling to the edge of the leaves and down to the land, streching its transparent and full of change body. 雨滴打在翠绿的树叶上，慢慢滑过细细的叶脉，从叶子的边缘滚落到地上，伸展着它透明而富于变化的身体。
