abaxial surface of the leaf造句

例句与造句

1. The adaxial and abaxial surface of the leaf is covered with yellowish or purplish spines that grow from purple wart-like structures.
2. The xylem is oriented toward the adaxial surface of the leaf ( usually the upper side ), and phloem is oriented toward the abaxial surface of the leaf.
3. It's difficult to find abaxial surface of the leaf in a sentence. 用abaxial surface of the leaf造句挺难的