hour-glass cells of seed coat

例句：

1. 1. The hourglass cells of the seed coat are responsible for storing water and nutrients during germination.
   种子壳的钟形细胞负责在发芽过程中储存水分和养分。
2. 2. The hourglass cells are essential for the growth and development of plants.
   钟形细胞对植物的生长和发育至关重要。
3. 3.During the germination process, the hourglass cells expand and release their contents, which helps to facilitate the absorption of water and nutrients by the plant.
   在发芽过程中，钟形细胞会膨胀并释放其内容物，这有助于促进植物吸收水分和养分。