spongy mesophyll

• 叶肉

spongy mesophyll的用法和样例：

例句

1. The thick leaves have vein-parellel mesophyll cells.
   白城色木槭的叶有平脉叶肉细胞，叶片较厚。
2. The margins of pinna are not revolute.The pinna mesophyll is well differentiated with a single vein.
   小叶片边缘木反卷，叶肉分化，具单脉，木质部发育为中始式，气孔为单环型。