midrib是什么意思

n.[植](叶的)中脉

1、The midrib of the leaf provides support and structure to the entire leaf.
叶片的主脉为整个叶子提供支撑和结构。

2、The midrib of the palm leaf is often used for weaving baskets and mats.
棕榈叶的主脉通常用于编制篮子和席子。

叶片中央的主脉，负责输送水分和养分。