pollen sac的用法和樣例:
例句
- The pollen is released when the lobes split open longitudinally.
當花粉成熟時,葯隔每側的兩個花粉囊相互連通。
- Each lobe contains two pollen sacs that produce very large quantities of small pollen grains.
左右兩側花粉囊之間是薄壁細胞構成的葯隔,葯隔中的維管束與花絲維管束相連。
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