| 释义 |
Definition of middle vein in English: middle veinnoun Chiefly Botany, the midvein of a leaf.
Origin Late Middle English; earliest use found in John Trevisa (c1342–?1402), translator. Definition of middle vein in US English: middle veinnoun Chiefly Botany, the midvein of a leaf.
Origin Late Middle English; earliest use found in John Trevisa (c1342–?1402), translator. |