laevulose

例句：

1. 1. The laevulose substance is a key component of the plant's defense mechanism.
   这种物质是植物防御机制的关键成分。
2. 2. The laevulose structure of the cell wall provides strength and flexibility.
   细胞壁的laevulose结构提供了强度和灵活性。
3. 3. Laevulose is a type of polysaccharide found in many plants, including some fruits and vegetables.
   laevulose是一种多糖，存在于许多植物中，包括一些水果和蔬菜。